Podcast
Questions and Answers
Which of the following statements accurately describes a solution?
Which of the following statements accurately describes a solution?
- A mixture where components are chemically bonded. (correct)
- A heterogeneous mixture with visible particles that settle over time.
- A substance that cannot dissolve another substance.
- A homogeneous mixture of two or more substances in a single physical state.
In a saltwater solution, what is the solute?
In a saltwater solution, what is the solute?
- The salt.
- The mixture itself. (correct)
- Neither, as both are solvents.
- The water.
Which of the following is an example of a solution where gas is the solute?
Which of the following is an example of a solution where gas is the solute?
- Carbonated water. (correct)
- Sugar dissolved in water.
- Brass.
- Saltwater.
Which of the following factors does NOT affect the rate at which a substance dissolves?
Which of the following factors does NOT affect the rate at which a substance dissolves?
Which of the following best describes the term 'miscible'?
Which of the following best describes the term 'miscible'?
If the temperature of a liquid solvent increases, what generally happens to the solubility of a solid solute?
If the temperature of a liquid solvent increases, what generally happens to the solubility of a solid solute?
What is the effect of increasing pressure on the solubility of a gas in a liquid?
What is the effect of increasing pressure on the solubility of a gas in a liquid?
Which of the following describes a 'concentrated' solution?
Which of the following describes a 'concentrated' solution?
What term describes a solution that contains more solute than it can theoretically hold at a given temperature?
What term describes a solution that contains more solute than it can theoretically hold at a given temperature?
What does 'weight percent' (wt%) express?
What does 'weight percent' (wt%) express?
What is the weight percent of a solution made by dissolving 5 grams of sugar in 95 grams of water?
What is the weight percent of a solution made by dissolving 5 grams of sugar in 95 grams of water?
If you dissolve 20 grams of salt in enough water to make 200 mL of solution, what is the weight/volume percent (w/v%)?
If you dissolve 20 grams of salt in enough water to make 200 mL of solution, what is the weight/volume percent (w/v%)?
What is the total volume of a solution if a 10% (v/v) solution contains 25 mL of solute?
What is the total volume of a solution if a 10% (v/v) solution contains 25 mL of solute?
What is the molarity of a solution containing 2 moles of solute in 4 liters of solution?
What is the molarity of a solution containing 2 moles of solute in 4 liters of solution?
How many grams of NaCl (molar mass = 58.44 g/mol) are needed to prepare 500 mL of a 0.1 M NaCl solution?
How many grams of NaCl (molar mass = 58.44 g/mol) are needed to prepare 500 mL of a 0.1 M NaCl solution?
7.45 g of potassium chloride (KCl) was dissolved in 100 g of water. Calculate the molality of the solution
7.45 g of potassium chloride (KCl) was dissolved in 100 g of water. Calculate the molality of the solution
What is the molality of a solution containing of 0.5 moles of solute dissolved in 250 g of solvent?
What is the molality of a solution containing of 0.5 moles of solute dissolved in 250 g of solvent?
If you dilute 50 mL of a 2.0 M solution to 200 mL, what is the new molarity?
If you dilute 50 mL of a 2.0 M solution to 200 mL, what is the new molarity?
Which process involves adding more solvent to decrease the concentration of a solution?
Which process involves adding more solvent to decrease the concentration of a solution?
In the dilution formula $M_1V_1 = M_2V_2$, what does the 'V' represent?
In the dilution formula $M_1V_1 = M_2V_2$, what does the 'V' represent?
How many milliliters of 5.0 M stock solution would you need to prepare 100 mL of 0.25 M solution?
How many milliliters of 5.0 M stock solution would you need to prepare 100 mL of 0.25 M solution?
Which of the following is NOT a colligative Property?
Which of the following is NOT a colligative Property?
Which type of solution is brass, an alloy of copper and zinc?
Which type of solution is brass, an alloy of copper and zinc?
Which of the following is a characteristic of liquid solutions?
Which of the following is a characteristic of liquid solutions?
What is a key characteristic of gaseous solutions?
What is a key characteristic of gaseous solutions?
Which of the following is an example of a solid dissolved in a liquid?
Which of the following is an example of a solid dissolved in a liquid?
Which of the following statements best describes a suspension?
Which of the following statements best describes a suspension?
What property distinguishes colloids from true solutions and suspensions?
What property distinguishes colloids from true solutions and suspensions?
Which phenomenon explains why colloids appear cloudy or opaque?
Which phenomenon explains why colloids appear cloudy or opaque?
Which of the following is an example of a colloid?
Which of the following is an example of a colloid?
What is the primary difference between a solution and a suspension regarding particle size?
What is the primary difference between a solution and a suspension regarding particle size?
Which type of mixture can be separated by filtration?
Which type of mixture can be separated by filtration?
Which of the following is the correct order of mixtures from smallest to largest particle size?
Which of the following is the correct order of mixtures from smallest to largest particle size?
A scientist observes a mixture scattering a beam of light shone through it, but the mixture does not settle upon standing. Which type of mixture is the scientist most likely observing?
A scientist observes a mixture scattering a beam of light shone through it, but the mixture does not settle upon standing. Which type of mixture is the scientist most likely observing?
Which of the following is true of an unsaturated solution?
Which of the following is true of an unsaturated solution?
What is the molarity of a solution prepared by dissolving 116.88 grams of NaCl into enough water to make 2.0 Liters of solution? (Molar mass of NaCl = 58.44 g/mol)
What is the molarity of a solution prepared by dissolving 116.88 grams of NaCl into enough water to make 2.0 Liters of solution? (Molar mass of NaCl = 58.44 g/mol)
A solution of hydrochloric acid (HCl) is labeled as 36% by weight. The density of the solution is 1.18 g/mL. What is the molarity of the solution? (Molar mass of HCl = 36.5 g/mol)
A solution of hydrochloric acid (HCl) is labeled as 36% by weight. The density of the solution is 1.18 g/mL. What is the molarity of the solution? (Molar mass of HCl = 36.5 g/mol)
Which of the following manipulations would likely decrease the solubility of $O_2$ gas in water?
Which of the following manipulations would likely decrease the solubility of $O_2$ gas in water?
Which of the following is a key characteristic of a true solution?
Which of the following is a key characteristic of a true solution?
In saltwater, what role does the water play?
In saltwater, what role does the water play?
Which of the following solutions has a gas as the solute?
Which of the following solutions has a gas as the solute?
Which factor does NOT influence the rate at which a substance dissolves in a solvent?
Which factor does NOT influence the rate at which a substance dissolves in a solvent?
What term describes two liquids that are able to mix in any proportion to form a homogenous solution?
What term describes two liquids that are able to mix in any proportion to form a homogenous solution?
How does increasing temperature typically affect the solubility of solid solutes in liquid solvents?
How does increasing temperature typically affect the solubility of solid solutes in liquid solvents?
What characterizes a 'concentrated' solution?
What characterizes a 'concentrated' solution?
What does 'weight percent' (wt%) of a solution express?
What does 'weight percent' (wt%) of a solution express?
If 5 g of sugar is dissolved in 95 g of water, what is the weight percent of the solution?
If 5 g of sugar is dissolved in 95 g of water, what is the weight percent of the solution?
What is the weight/volume percent (w/v%) if 20 g of salt is dissolved in enough water to make 200 mL of solution?
What is the weight/volume percent (w/v%) if 20 g of salt is dissolved in enough water to make 200 mL of solution?
If 7.45 g of potassium chloride (KCl) is dissolved in 100 g of water, what is the molality of the solution?
If 7.45 g of potassium chloride (KCl) is dissolved in 100 g of water, what is the molality of the solution?
What is the molality of a solution if 0.5 moles of solute are dissolved in 250 g of solvent?
What is the molality of a solution if 0.5 moles of solute are dissolved in 250 g of solvent?
If 50 mL of a 2.0 M solution is diluted to 200 mL, what is the new molarity?
If 50 mL of a 2.0 M solution is diluted to 200 mL, what is the new molarity?
Which process describes adding more solvent to a solution?
Which process describes adding more solvent to a solution?
To prepare 100 mL of a 0.25 M solution, how many milliliters of a 5.0 M stock solution are required?
To prepare 100 mL of a 0.25 M solution, how many milliliters of a 5.0 M stock solution are required?
What type of solution does brass exemplify, being an alloy of copper and zinc?
What type of solution does brass exemplify, being an alloy of copper and zinc?
Which of the following is a typical characteristic of liquid solutions?
Which of the following is a typical characteristic of liquid solutions?
What is a defining trait of gaseous solutions?
What is a defining trait of gaseous solutions?
Which scenario exemplifies a solid dissolved in a liquid?
Which scenario exemplifies a solid dissolved in a liquid?
Which statement accurately describes a suspension?
Which statement accurately describes a suspension?
What characteristic distinguishes colloids from both true solutions and suspensions?
What characteristic distinguishes colloids from both true solutions and suspensions?
Which phenomenon explains why colloids often appear cloudy or opaque?
Which phenomenon explains why colloids often appear cloudy or opaque?
What is the primary difference between a solution and a suspension with regard to particle size?
What is the primary difference between a solution and a suspension with regard to particle size?
Which kind of mixture can easily undergo separation via filtration?
Which kind of mixture can easily undergo separation via filtration?
From smallest to largest particle size, what is the correct order of mixtures?
From smallest to largest particle size, what is the correct order of mixtures?
A scientist shines a beam of light through a mixture an observes the light being scattered. The mixture does not settle upon standing. What type of mixture is the scientist most likely observing?
A scientist shines a beam of light through a mixture an observes the light being scattered. The mixture does not settle upon standing. What type of mixture is the scientist most likely observing?
Which statement is correct regarding an unsaturated solution?
Which statement is correct regarding an unsaturated solution?
If 116.88 grams of NaCl is dissolved in enough water to make 2.0 L of solution, what is the molarity? (Molar mass of NaCl = 58.44 g/mol)
If 116.88 grams of NaCl is dissolved in enough water to make 2.0 L of solution, what is the molarity? (Molar mass of NaCl = 58.44 g/mol)
Hydrochloric acid (HCl) is 36% by weight and has a density of 1.18 g/mL. What is the molarity of the solution? (Molar mass of HCl = 36.5 g/mol)
Hydrochloric acid (HCl) is 36% by weight and has a density of 1.18 g/mL. What is the molarity of the solution? (Molar mass of HCl = 36.5 g/mol)
Which of the following actions is likely to reduce the solubility of $O_2$ gas in water?
Which of the following actions is likely to reduce the solubility of $O_2$ gas in water?
Identify the INCORRECT solute-solvent pairing.
Identify the INCORRECT solute-solvent pairing.
Assuming pressure remains constant, what typically happens to the solubility of a gas as temperature increases?
Assuming pressure remains constant, what typically happens to the solubility of a gas as temperature increases?
The solubility increased when substance X combined with water. What does this suggest about substance X?
The solubility increased when substance X combined with water. What does this suggest about substance X?
What is the weight percentage of sodium chloride in a solution made by dissolving 2.25g of NaCl in 7.45g of $H_20$?
What is the weight percentage of sodium chloride in a solution made by dissolving 2.25g of NaCl in 7.45g of $H_20$?
If 10 grams of sugar are dissolved in 100 grams of water to yield a total mass of 110 grams, what is the weight percent?
If 10 grams of sugar are dissolved in 100 grams of water to yield a total mass of 110 grams, what is the weight percent?
How much NaCl in grams is needed to make 500 grams of a 10% (wt%) solution?
How much NaCl in grams is needed to make 500 grams of a 10% (wt%) solution?
If 5 grams of solute are dissolved in 250 milliliters of solution, what is the w/v%?
If 5 grams of solute are dissolved in 250 milliliters of solution, what is the w/v%?
How many grams of salt are needed to prepare 250 milliliters of a 4% w/v solution?
How many grams of salt are needed to prepare 250 milliliters of a 4% w/v solution?
Find the total solution volume of a 5% solution of unknown solution that diluted a 10ml of solute
Find the total solution volume of a 5% solution of unknown solution that diluted a 10ml of solute
How many grams of NaBr (molar mass = 102.9 g/mol) would be needed to prepare 700 ml of 0.230 M NaBr solution?
How many grams of NaBr (molar mass = 102.9 g/mol) would be needed to prepare 700 ml of 0.230 M NaBr solution?
What is the molarity of a solution that was prepared by dissolving 14.2 g of $NaNO_3$ (molar mass = 85.0 g/mol) in enough water to make 350 mL of solution?
What is the molarity of a solution that was prepared by dissolving 14.2 g of $NaNO_3$ (molar mass = 85.0 g/mol) in enough water to make 350 mL of solution?
What is volume of 6.0M NaOH needs to be diluted to prepare 5.00L if 0.10M NaOH
What is volume of 6.0M NaOH needs to be diluted to prepare 5.00L if 0.10M NaOH
If you dilute 175 mL of a 1.6 M solution of LiCl to 1.0 L, determine the new concentration of the solution.
If you dilute 175 mL of a 1.6 M solution of LiCl to 1.0 L, determine the new concentration of the solution.
Which factor does NOT directly influence the solubility of a solute in a solvent?
Which factor does NOT directly influence the solubility of a solute in a solvent?
What is the primary reason alloys are often preferred over pure metals?
What is the primary reason alloys are often preferred over pure metals?
Which characteristic is unique to liquid solutions compared to solid or gaseous solutions?
Which characteristic is unique to liquid solutions compared to solid or gaseous solutions?
Which statement accurately describes the behavior of particles in a suspension?
Which statement accurately describes the behavior of particles in a suspension?
What is the phenomenon where light is scattered by particles in a colloid or suspension?
What is the phenomenon where light is scattered by particles in a colloid or suspension?
What type of solution is formed when two or more gases are mixed together?
What type of solution is formed when two or more gases are mixed together?
In a solution of sugar dissolved in water, which component is the solute?
In a solution of sugar dissolved in water, which component is the solute?
Which of the following actions will likely increase the solubility of a solid solute in a liquid solvent?
Which of the following actions will likely increase the solubility of a solid solute in a liquid solvent?
What term describes a solution that contains the maximum amount of solute that can be dissolved at a given temperature?
What term describes a solution that contains the maximum amount of solute that can be dissolved at a given temperature?
To increase the rate at which a solute dissolves in a solvent, which method is generally NOT effective?
To increase the rate at which a solute dissolves in a solvent, which method is generally NOT effective?
Which statement accurately describes 'miscible' substances?
Which statement accurately describes 'miscible' substances?
How does increasing the pressure affect the solubility of a gas in a liquid?
How does increasing the pressure affect the solubility of a gas in a liquid?
What is a defining characteristic of a 'dilute' solution?
What is a defining characteristic of a 'dilute' solution?
What term describes a condition where a solution contains contains more solute than it can theoretically hold at a given temperature?
What term describes a condition where a solution contains contains more solute than it can theoretically hold at a given temperature?
If 15 grams of NaCl is dissolved in 135 grams of water, what is the weight percent (wt%) of NaCl in the solution?
If 15 grams of NaCl is dissolved in 135 grams of water, what is the weight percent (wt%) of NaCl in the solution?
If 30 mL of ethanol is added to enough water to make 300 mL of solution, what is the volume/volume percent (v/v%)?
If 30 mL of ethanol is added to enough water to make 300 mL of solution, what is the volume/volume percent (v/v%)?
You have a 20% (v/v) solution containing 40 mL of solute. What is the total volume of the solution?
You have a 20% (v/v) solution containing 40 mL of solute. What is the total volume of the solution?
If 18 grams of glucose (molar mass = 180 g/mol) are dissolved in enough water to make 500 mL of solution, what is the molarity?
If 18 grams of glucose (molar mass = 180 g/mol) are dissolved in enough water to make 500 mL of solution, what is the molarity?
To prepare 250 mL of a 0.5 M solution of NaCl (molar mass = 58.44 g/mol), how many grams of NaCl are needed?
To prepare 250 mL of a 0.5 M solution of NaCl (molar mass = 58.44 g/mol), how many grams of NaCl are needed?
If 3.65 g of HCl (molar mass = 36.5 g/mol) are dissolved in 200 g of water, what is the molality of the solution?
If 3.65 g of HCl (molar mass = 36.5 g/mol) are dissolved in 200 g of water, what is the molality of the solution?
To prepare a 0.5 m solution, 0.1 moles of solute are dissolved in how many kilograms of solvent?
To prepare a 0.5 m solution, 0.1 moles of solute are dissolved in how many kilograms of solvent?
What is the process of reducing a solution's concentration by adding more solvent?
What is the process of reducing a solution's concentration by adding more solvent?
In the dilution formula $M_1V_1 = M_2V_2$, what does the subscript '1' typically refer to?
In the dilution formula $M_1V_1 = M_2V_2$, what does the subscript '1' typically refer to?
To prepare 250 mL of a 0.1 M solution from a 2.0 M stock solution, how many milliliters of the stock solution are needed?
To prepare 250 mL of a 0.1 M solution from a 2.0 M stock solution, how many milliliters of the stock solution are needed?
Which of the following is a property that depends on the concentration of solute particles, rather than the identity of the solute?
Which of the following is a property that depends on the concentration of solute particles, rather than the identity of the solute?
What kind of solution is air, which consists primarily of nitrogen and oxygen gases?
What kind of solution is air, which consists primarily of nitrogen and oxygen gases?
Which of the following is a common trait of all true solutions?
Which of the following is a common trait of all true solutions?
Which of the following is an example of a liquid dissolved in liquid solution?
Which of the following is an example of a liquid dissolved in liquid solution?
What is the key distinction between a colloid and a solution?
What is the key distinction between a colloid and a solution?
Which type of mixture is easily separated through filtration?
Which type of mixture is easily separated through filtration?
From smallest to largest, how do particle sizes compare in solutions, colloids, and suspensions?
From smallest to largest, how do particle sizes compare in solutions, colloids, and suspensions?
A mixture is observed to neither scatter light nor settle upon standing. How is it best classified?
A mixture is observed to neither scatter light nor settle upon standing. How is it best classified?
What is a key characteristic of an unsaturated solution?
What is a key characteristic of an unsaturated solution?
What is the molarity of a solution containing 10 grams of NaOH (molar mass = 40 g/mol) in 250 mL of solution?
What is the molarity of a solution containing 10 grams of NaOH (molar mass = 40 g/mol) in 250 mL of solution?
A solution of sulfuric acid ($H_2SO_4$) is 49% by weight and has a density of 1.39 g/mL. What is the molarity of the solution? (Molar mass of $H_2SO_4$ = 98 g/mol)
A solution of sulfuric acid ($H_2SO_4$) is 49% by weight and has a density of 1.39 g/mL. What is the molarity of the solution? (Molar mass of $H_2SO_4$ = 98 g/mol)
Which action would most likely decrease the solubility of carbon dioxide ($CO_2$) gas in water?
Which action would most likely decrease the solubility of carbon dioxide ($CO_2$) gas in water?
What factor primarily determines whether a solute will dissolve in a given solvent?
What factor primarily determines whether a solute will dissolve in a given solvent?
Which of the following operations will change the molality of a solution without changing the molarity?
Which of the following operations will change the molality of a solution without changing the molarity?
What mass of potassium nitrate ($KNO_3$) is needed to prepare 250.0 mL of a 0.200 M solution using a volumetric flask? (Molar mass $KNO_3$ = 101.1 g/mol)
What mass of potassium nitrate ($KNO_3$) is needed to prepare 250.0 mL of a 0.200 M solution using a volumetric flask? (Molar mass $KNO_3$ = 101.1 g/mol)
You have two solutions of copper sulfate ($CuSO_4$), Solution A is 0.5 M and Solution B is 2.0 M. Which solution is more concentrated, and by what factor?
You have two solutions of copper sulfate ($CuSO_4$), Solution A is 0.5 M and Solution B is 2.0 M. Which solution is more concentrated, and by what factor?
Which of the following statements is always true for an ideal solution?
Which of the following statements is always true for an ideal solution?
Which of the following is the correct formula to calculate the number of moles of solute when molarity, M, and volume, V, are given?
Which of the following is the correct formula to calculate the number of moles of solute when molarity, M, and volume, V, are given?
A chemist wants to create 450mL of 0.400M solution of $KMnO_4$ with a molar mass of 158.03 g/mol, how much grams should the chemist add?
A chemist wants to create 450mL of 0.400M solution of $KMnO_4$ with a molar mass of 158.03 g/mol, how much grams should the chemist add?
Given a 12.0 M stock solution of HCl, a scientist needs to prepare 500 mL of a 0.500 M solution. How many mL of the stock solution are required?
Given a 12.0 M stock solution of HCl, a scientist needs to prepare 500 mL of a 0.500 M solution. How many mL of the stock solution are required?
What is the process of slowly adding a solution of known concentration to another solution of unknown concentration to determine the concentration of the unknown solution?
What is the process of slowly adding a solution of known concentration to another solution of unknown concentration to determine the concentration of the unknown solution?
A mysterious compound is added to water and results in no change of the solution. When a beam of light is shone through it, the beam is visable. However, the particles do not settle. What can be deducted from this series of tests?
A mysterious compound is added to water and results in no change of the solution. When a beam of light is shone through it, the beam is visable. However, the particles do not settle. What can be deducted from this series of tests?
An experiment calls for 35% $HNO_3$ ($MM=63.01 g/mol$) with density of 1.21 g/mL, what molarity of solution should the experimenter use?
An experiment calls for 35% $HNO_3$ ($MM=63.01 g/mol$) with density of 1.21 g/mL, what molarity of solution should the experimenter use?
Which of the following operations would best increase the solubility of a gas in a liquid?
Which of the following operations would best increase the solubility of a gas in a liquid?
A solution is made by dissolving 30.0 g of $CuSO_4$ in enough water to make 250ml of solution. What is the concentration, M (Molarity)?
A solution is made by dissolving 30.0 g of $CuSO_4$ in enough water to make 250ml of solution. What is the concentration, M (Molarity)?
Which of the following is the correct formula for calculating weight percent (wt%)?
Which of the following is the correct formula for calculating weight percent (wt%)?
You need to prepare 600 grams of a saline solution with a weight percent of 15% NaCl. How many grams of NaCl are required?
You need to prepare 600 grams of a saline solution with a weight percent of 15% NaCl. How many grams of NaCl are required?
What is the weight/volume percent (w/v%) of a solution containing 15 grams of solute in 300 mL of solution?
What is the weight/volume percent (w/v%) of a solution containing 15 grams of solute in 300 mL of solution?
To prepare 500 mL of a 8% w/v solution of KCl, how many grams of KCl are needed?
To prepare 500 mL of a 8% w/v solution of KCl, how many grams of KCl are needed?
What is the volume/volume percent (v/v%) of a solution made by mixing 40 mL of ethanol with enough water to make 800 mL of solution?
What is the volume/volume percent (v/v%) of a solution made by mixing 40 mL of ethanol with enough water to make 800 mL of solution?
If a solution is prepared by diluting 20 mL of solute to a total volume of 400 mL, what is the volume percent concentration?
If a solution is prepared by diluting 20 mL of solute to a total volume of 400 mL, what is the volume percent concentration?
What is the molarity of a solution containing 3.0 moles of solute in 500 mL of solution?
What is the molarity of a solution containing 3.0 moles of solute in 500 mL of solution?
How many moles of $CaCl_2$ are needed to prepare 250 mL of a 2.0 M $CaCl_2$ solution?
How many moles of $CaCl_2$ are needed to prepare 250 mL of a 2.0 M $CaCl_2$ solution?
If 11.7 grams of NaCl (molar mass = 58.5 g/mol) are dissolved in enough water to make 200 mL of solution, what is the molarity of the solution?
If 11.7 grams of NaCl (molar mass = 58.5 g/mol) are dissolved in enough water to make 200 mL of solution, what is the molarity of the solution?
What is the formula to calculate the grams of solute to add to solution?
What is the formula to calculate the grams of solute to add to solution?
What is the molality of a solution made by dissolving 4 moles of solute in 2000 grams of solvent?
What is the molality of a solution made by dissolving 4 moles of solute in 2000 grams of solvent?
What is the molality of a solution containing 18.0 g of glucose (molar mass = 180 g/mol) dissolved in 400 g of water?
What is the molality of a solution containing 18.0 g of glucose (molar mass = 180 g/mol) dissolved in 400 g of water?
If you have a 3.0 m solution, how many kilograms of solvent are needed to dissolve 1.5 moles of solute?
If you have a 3.0 m solution, how many kilograms of solvent are needed to dissolve 1.5 moles of solute?
You need to dilute a 25.0 mL of 3.0 M stock solution of HCl to a final volume of 500 mL. What is the molarity of the diluted solution?
You need to dilute a 25.0 mL of 3.0 M stock solution of HCl to a final volume of 500 mL. What is the molarity of the diluted solution?
If you dilute 100 mL of a 4.0 M solution to a final volume of 800 mL, what is the new molarity of the solution?
If you dilute 100 mL of a 4.0 M solution to a final volume of 800 mL, what is the new molarity of the solution?
To prepare 200 mL of a 0.5 M NaCl solution from a 4.0 M stock solution, what volume of the stock solution is required?
To prepare 200 mL of a 0.5 M NaCl solution from a 4.0 M stock solution, what volume of the stock solution is required?
What is the first step in figuring out the grams you need when you have a volume to dilute?
What is the first step in figuring out the grams you need when you have a volume to dilute?
Which of the following does solvation of solute require?
Which of the following does solvation of solute require?
Which of the following is NOT a type of solution?
Which of the following is NOT a type of solution?
Which of the following statements is true of particles in solution?
Which of the following statements is true of particles in solution?
Which of the following is an example of a liquid/liquid solution?
Which of the following is an example of a liquid/liquid solution?
Which mixture type exhibits the Tyndall effect?
Which mixture type exhibits the Tyndall effect?
In what type of mixture do the particles settle out of the mixture if left standing?
In what type of mixture do the particles settle out of the mixture if left standing?
Which action would likely improve the rate of dissolution of a solid solute in a liquid solvent?
Which action would likely improve the rate of dissolution of a solid solute in a liquid solvent?
Consider the following scenario: A substance dissolves slowly in water, the resulting mixture appears cloudy, and the solute does not settle out over time. Which type of mixture is most likely formed?
Consider the following scenario: A substance dissolves slowly in water, the resulting mixture appears cloudy, and the solute does not settle out over time. Which type of mixture is most likely formed?
What is the crucial distinction between a saturated and supersaturated solution at a given temperature?
What is the crucial distinction between a saturated and supersaturated solution at a given temperature?
What is the relationship between pressure and solubility that describes gases and liquids?
What is the relationship between pressure and solubility that describes gases and liquids?
Which action will cause a supersaturated solution to rapidly precipitate?
Which action will cause a supersaturated solution to rapidly precipitate?
When comparing a solution to a colloid, which property would the solution always have?
When comparing a solution to a colloid, which property would the solution always have?
During solution formation, energy changes occur. Which statement accurately describes the energy changes during dissolution?
During solution formation, energy changes occur. Which statement accurately describes the energy changes during dissolution?
Consider the following scenario: a scientist adds a solid solute to a liquid solvent and observes that the beaker becomes colder. Which statement BEST describes the dissolution process?
Consider the following scenario: a scientist adds a solid solute to a liquid solvent and observes that the beaker becomes colder. Which statement BEST describes the dissolution process?
Which of the following describes a process that increases the solubility of a solid in a liquid?
Which of the following describes a process that increases the solubility of a solid in a liquid?
Given a solution of copper sulfate in water, how would you correctly prepare a more dilute solution?
Given a solution of copper sulfate in water, how would you correctly prepare a more dilute solution?
What is the effect of adding more solvent to pre-existing solution?
What is the effect of adding more solvent to pre-existing solution?
A student needs to prepare 500.0 mL of a 0.150 M solution of potassium hydroxide (KOH) from a 1.00 M stock solution. If the student adds 60.0 mL of the stock solution to a 500.0 mL volumetric flask, what should the student do next?
A student needs to prepare 500.0 mL of a 0.150 M solution of potassium hydroxide (KOH) from a 1.00 M stock solution. If the student adds 60.0 mL of the stock solution to a 500.0 mL volumetric flask, what should the student do next?
Which of the following best describes the role of 'like dissolves like' in predicting solubility?
Which of the following best describes the role of 'like dissolves like' in predicting solubility?
A chemist adds a small amount of solid NaCl to water and stirs. All the salt dissolves, and more salt can be added and dissolved. Now, the chemist adds a tiny crystal of NaCl, and a large amount of solid immediately precipitates out of the solution. Before adding the crystal, the solution was...
A chemist adds a small amount of solid NaCl to water and stirs. All the salt dissolves, and more salt can be added and dissolved. Now, the chemist adds a tiny crystal of NaCl, and a large amount of solid immediately precipitates out of the solution. Before adding the crystal, the solution was...
Which of the following is an example of a solid solution?
Which of the following is an example of a solid solution?
Which of the following best describes a liquid foam?
Which of the following best describes a liquid foam?
A student performs an experiment to determine how well different salts dissolve in water. They measure dissolving rates of different salts. Which property directly affect the dissolving rate?
A student performs an experiment to determine how well different salts dissolve in water. They measure dissolving rates of different salts. Which property directly affect the dissolving rate?
A scientist observes a mixture scattering the light, but the mixture does not settle. What are the conclusion from this information?
A scientist observes a mixture scattering the light, but the mixture does not settle. What are the conclusion from this information?
What is the molality of a solution prepared by dissolving 25.0 g of $CuSO_4 \cdot 5H_2O$ (molar mass = 249.7 g/mol) in 250.0 g of water?
What is the molality of a solution prepared by dissolving 25.0 g of $CuSO_4 \cdot 5H_2O$ (molar mass = 249.7 g/mol) in 250.0 g of water?
Consider a scenario where an aqueous solution of $KNO_3$ is prepared at 80C using 85 grams of $H_2O$. Upon cooling to 25C, the solution remains clear with no precipitate observed. What does this observation indicate regarding the solution at 25C?
Consider a scenario where an aqueous solution of $KNO_3$ is prepared at 80C using 85 grams of $H_2O$. Upon cooling to 25C, the solution remains clear with no precipitate observed. What does this observation indicate regarding the solution at 25C?
A researcher is preparing a buffer solution and requires precisely 500 mL of a 0.25 M Tris-HCl buffer at pH 8.0. However, she only has a 2.0 M Tris-HCl stock solution. To what volume would volume must she dilute this solution to reach the correct molarity?
A researcher is preparing a buffer solution and requires precisely 500 mL of a 0.25 M Tris-HCl buffer at pH 8.0. However, she only has a 2.0 M Tris-HCl stock solution. To what volume would volume must she dilute this solution to reach the correct molarity?
Which of the following must be true for a mixture to be classified as a solution?
Which of the following must be true for a mixture to be classified as a solution?
In a solution of glucose dissolved in water, what is the solute?
In a solution of glucose dissolved in water, what is the solute?
Which of the following scenarios describes a solution where a solid is dissolved in a solid?
Which of the following scenarios describes a solution where a solid is dissolved in a solid?
According to kinetic molecular theory, increasing the temperature of a solvent affect the properties of a solute?
According to kinetic molecular theory, increasing the temperature of a solvent affect the properties of a solute?
Which term describes two substances that do not mix to form a homogenous solution, regardless of the proportions?
Which term describes two substances that do not mix to form a homogenous solution, regardless of the proportions?
What effect does increased pressure have on the solubility of gases in liquids?
What effect does increased pressure have on the solubility of gases in liquids?
Which factor, if changed, would NOT directly affect the rate at which a solute dissolves in a solvent?
Which factor, if changed, would NOT directly affect the rate at which a solute dissolves in a solvent?
Which of the following describes a 'dilute' solution?
Which of the following describes a 'dilute' solution?
Which term describes a solution that contains more solute than it can theoretically hold at a given temperature and is unstable?
Which term describes a solution that contains more solute than it can theoretically hold at a given temperature and is unstable?
A solution is prepared by mixing 30.0 g of $CuSO_4$ in enough water to make 250 mL of solution. What is the concentration in M (Molarity) if you have a molar mass of 159.62?
A solution is prepared by mixing 30.0 g of $CuSO_4$ in enough water to make 250 mL of solution. What is the concentration in M (Molarity) if you have a molar mass of 159.62?
Which formula correctly expresses weight percent (wt%)?
Which formula correctly expresses weight percent (wt%)?
To prepare 600 grams of a saline solution with a weight percent of 15% NaCl, how many grams of NaCl are required?
To prepare 600 grams of a saline solution with a weight percent of 15% NaCl, how many grams of NaCl are required?
If 15 grams of solute are present in 300 mL of solution, what is the weight/volume percent (w/v%)?
If 15 grams of solute are present in 300 mL of solution, what is the weight/volume percent (w/v%)?
A solution is made by mixing 40 mL of ethanol with enough water to make 800 mL of solution. What is the volume/volume percent (v/v%) of this solution?
A solution is made by mixing 40 mL of ethanol with enough water to make 800 mL of solution. What is the volume/volume percent (v/v%) of this solution?
If 20 mL of solute is diluted to a total volume of 400 mL, what is the volume percent concentration?
If 20 mL of solute is diluted to a total volume of 400 mL, what is the volume percent concentration?
What is the molarity of solution where 3.0 moles of solute are dissolved in 500 mL of solution?
What is the molarity of solution where 3.0 moles of solute are dissolved in 500 mL of solution?
How many grams of solute is needed to add to solution to prepare mL of solution?
How many grams of solute is needed to add to solution to prepare mL of solution?
Calculate the molality of a solution containing 18.0 g of glucose (molar mass = 180 g/mol) dissolved in 400 g of water.
Calculate the molality of a solution containing 18.0 g of glucose (molar mass = 180 g/mol) dissolved in 400 g of water.
How many kilograms of solvent are needed to dissolve 1.5 moles of solute to create a 3.0 m solution?
How many kilograms of solvent are needed to dissolve 1.5 moles of solute to create a 3.0 m solution?
25.0 mL of 3.0 M stock solution of HCl to a final volume of 500 mL. What is the molarity of the diluted solution?
25.0 mL of 3.0 M stock solution of HCl to a final volume of 500 mL. What is the molarity of the diluted solution?
What volume of a 4.0 M stock solution is required to prepare 200 mL of a 0.5 M NaCl solution?
What volume of a 4.0 M stock solution is required to prepare 200 mL of a 0.5 M NaCl solution?
To prepare 250.0 mL of a 0.200 M solution using a volumetric flask, what mass of potassium nitrate ($KNO_3$) is needed?
To prepare 250.0 mL of a 0.200 M solution using a volumetric flask, what mass of potassium nitrate ($KNO_3$) is needed?
You have two solutions of copper sulfate ($CuSO_4$). Solution A is $. 5 M$ and Solution B is $2.0 M$. Which solution is more concentrated, and by what factor?
You have two solutions of copper sulfate ($CuSO_4$). Solution A is $. 5 M$ and Solution B is $2.0 M$. Which solution is more concentrated, and by what factor?
The formula to find how many Liters for the molarity of a solution is:
The formula to find how many Liters for the molarity of a solution is:
If you have a 12.0 M stock solution of HCl, how many mL are needed to prepare 500 mL of a 0.500 M solution?
If you have a 12.0 M stock solution of HCl, how many mL are needed to prepare 500 mL of a 0.500 M solution?
What is the process of slowly adding a solution to unknown concentration to a solution with already known concentration to determine the concentration of the unknown solution?
What is the process of slowly adding a solution to unknown concentration to a solution with already known concentration to determine the concentration of the unknown solution?
Which action would likely improve the rate of dissolution of a solid solute in a liquid solvent MOST efficiently?
Which action would likely improve the rate of dissolution of a solid solute in a liquid solvent MOST efficiently?
Which of the following is true regarding to particles in a solution?
Which of the following is true regarding to particles in a solution?
Which selection is the correct grams needed per kilograms of solvent?
Which selection is the correct grams needed per kilograms of solvent?
An experimenter adds particles in water and results in no settling of the solution. When a beam of light is shone through it, the beam is visable, what can be deducted from this series of tests?
An experimenter adds particles in water and results in no settling of the solution. When a beam of light is shone through it, the beam is visable, what can be deducted from this series of tests?
Which of the following is a main requirement of solvation of a solute?
Which of the following is a main requirement of solvation of a solute?
Which factor increases the solubility of MOST solid solutes in liquid solvents?
Which factor increases the solubility of MOST solid solutes in liquid solvents?
A substance dissolves slowly in water, the resulting mixture appears cloudy, and the solute does not settle out over time. Which type of mixture is most likely formed?
A substance dissolves slowly in water, the resulting mixture appears cloudy, and the solute does not settle out over time. Which type of mixture is most likely formed?
What best tells you the relationship between the solute in two solutions.
What best tells you the relationship between the solute in two solutions.
If you shine an intense light through a colloid or suspension, this is otherwise know as?
If you shine an intense light through a colloid or suspension, this is otherwise know as?
What happens if there is a presence of crystal impurities in a supersaturated solution?
What happens if there is a presence of crystal impurities in a supersaturated solution?
The Tyndall effect of a solution compared to a colloid will:
The Tyndall effect of a solution compared to a colloid will:
How does energy change in a solution formation?
How does energy change in a solution formation?
What is an endothermic reaction that involves solute and solve as result of reaction.
What is an endothermic reaction that involves solute and solve as result of reaction.
What action, if changed, decrease the solubility of a solid dissoliving into a liquid?
What action, if changed, decrease the solubility of a solid dissoliving into a liquid?
Why does adding more solvent, creates a more diluted solution?
Why does adding more solvent, creates a more diluted solution?
Which of the following options correctly identifies the solute and solvent in brass?
Which of the following options correctly identifies the solute and solvent in brass?
What is the term for the measure of how easily a solute dissolves in a solvent?
What is the term for the measure of how easily a solute dissolves in a solvent?
Which of the following is an example of a substance with high solubility in water?
Which of the following is an example of a substance with high solubility in water?
What is the correct term used to describe when two substances are able to mix in any proportion?
What is the correct term used to describe when two substances are able to mix in any proportion?
Which factor does NOT directly affect the rate at which a substance dissolves?
Which factor does NOT directly affect the rate at which a substance dissolves?
According to the provided information, how does the nature of a solvent affect the solubility of different solutes?
According to the provided information, how does the nature of a solvent affect the solubility of different solutes?
Which of the following statements best describes the effect of temperature on the solubility of solid solutes in a liquid solvent?
Which of the following statements best describes the effect of temperature on the solubility of solid solutes in a liquid solvent?
How does increasing the pressure affect the solubility of a gas in a solvent?
How does increasing the pressure affect the solubility of a gas in a solvent?
Which is NOT a factor that affects the rate at which substances dissolve?
Which is NOT a factor that affects the rate at which substances dissolve?
Which of the following describes an unsaturated solution?
Which of the following describes an unsaturated solution?
A solution is considered saturated when it:
A solution is considered saturated when it:
What is a key factor when classifying concentrations?
What is a key factor when classifying concentrations?
What term describes a condition where a solution contains more solute than it can theoretically hold?
What term describes a condition where a solution contains more solute than it can theoretically hold?
What is the formula to find weight percent?
What is the formula to find weight percent?
Calculate the weight percent of a solution containing 2.25g of NaCl dissolved in 7.45g of $H_2O$
Calculate the weight percent of a solution containing 2.25g of NaCl dissolved in 7.45g of $H_2O$
If you dissolve 10 grams of sugar in 100 grams of water, what is the weight percentage of the solution?
If you dissolve 10 grams of sugar in 100 grams of water, what is the weight percentage of the solution?
To make 500 grams of a 10% (wt%) solution of NaCl, how much NaCl is needed?
To make 500 grams of a 10% (wt%) solution of NaCl, how much NaCl is needed?
What formula is correct for calculating weight/volume percent?
What formula is correct for calculating weight/volume percent?
What is the weight/volume % of a solution, if there are 5 grams of solute dissolved in 250 milliliters of solution?
What is the weight/volume % of a solution, if there are 5 grams of solute dissolved in 250 milliliters of solution?
Which of the following formulas best expresses Volume Percent?
Which of the following formulas best expresses Volume Percent?
What is the total solution volume of a 5% solution, if there is 10ml of solute?
What is the total solution volume of a 5% solution, if there is 10ml of solute?
What is the key measurement to calculate Molarity?
What is the key measurement to calculate Molarity?
A solution contains 5.5 g of HCl (molar mass = 36.5 g/mol) dissolved in enough water to make 250 mL of solution. What is the molarity of the solution?
A solution contains 5.5 g of HCl (molar mass = 36.5 g/mol) dissolved in enough water to make 250 mL of solution. What is the molarity of the solution?
Calculate the molality of 25.0 grams of KBr dissolved in 750.0 mL of pure water
Calculate the molality of 25.0 grams of KBr dissolved in 750.0 mL of pure water
When diluting a solution, which value remains the same?
When diluting a solution, which value remains the same?
Which of the following is the correct formula for dilutions?
Which of the following is the correct formula for dilutions?
Which type of the following is NOT a type of solution mixture?
Which type of the following is NOT a type of solution mixture?
What is the solute in carbonated water?
What is the solute in carbonated water?
True or False: Separating liquid solutions can only occur by evaporation rather than filtration.
True or False: Separating liquid solutions can only occur by evaporation rather than filtration.
What are alloys known for having higher resistance to than normal metals?
What are alloys known for having higher resistance to than normal metals?
How does particle size vary among solutions, colloids, and suspensions?
How does particle size vary among solutions, colloids, and suspensions?
Which type of mixture separates or settles?
Which type of mixture separates or settles?
Which property is exclusive to colloids?
Which property is exclusive to colloids?
What name is given to solids mixed inside of liquid?
What name is given to solids mixed inside of liquid?
Which of the following cannot be filtered due to it being extremely small?
Which of the following cannot be filtered due to it being extremely small?
When observing light shone through a mixture, light cannot pass through the solution. Which of the following is it?
When observing light shone through a mixture, light cannot pass through the solution. Which of the following is it?
Which of the following will only separate by evaporation?
Which of the following will only separate by evaporation?
Which of the following will occur from increasing the surface are of a solute?
Which of the following will occur from increasing the surface are of a solute?
An aqueous solution of $KNO_3$ is prepared at 80C using 85 grams of $H_2O$. Upon cooling to 25C, the solution remains clear with no precipitate observed.
An aqueous solution of $KNO_3$ is prepared at 80C using 85 grams of $H_2O$. Upon cooling to 25C, the solution remains clear with no precipitate observed.
In a solution, what is the component that dissolves the other substance?
In a solution, what is the component that dissolves the other substance?
According to the graphic, which of the examples correctly identifies the solute vs. solvent?
According to the graphic, which of the examples correctly identifies the solute vs. solvent?
Which of the following statements accurately describes 'high' solubility?
Which of the following statements accurately describes 'high' solubility?
What typically happens when two 'immiscible' substances are combined?
What typically happens when two 'immiscible' substances are combined?
Which of the following is NOT a factor that directly affects the rate at which a substance dissolves?
Which of the following is NOT a factor that directly affects the rate at which a substance dissolves?
Based on the image, what is the relationship between the polarity of a substance and its solubility?
Based on the image, what is the relationship between the polarity of a substance and its solubility?
According to the images, how does increasing temperature generally affect the solubility of solid solutes in liquid solvents?
According to the images, how does increasing temperature generally affect the solubility of solid solutes in liquid solvents?
According to the image, what effect does increasing pressure have on the solubility of a gas in a liquid solvent?
According to the image, what effect does increasing pressure have on the solubility of a gas in a liquid solvent?
Which of the factors does NOT affect the rate at which a substance dissolves?
Which of the factors does NOT affect the rate at which a substance dissolves?
Which descriptor is associated with a solution containing only a small amount of solute?
Which descriptor is associated with a solution containing only a small amount of solute?
Which term refers to a solution that is still capable of dissolving more of a solute?
Which term refers to a solution that is still capable of dissolving more of a solute?
What is the formula for calculating weight percent?
What is the formula for calculating weight percent?
What calculation would you use to find the weight percentage of sodium chloride in a solution made by dissolving 2.25g of NaCl in 7.45g of $H_20$?
What calculation would you use to find the weight percentage of sodium chloride in a solution made by dissolving 2.25g of NaCl in 7.45g of $H_20$?
What is the weight percentage of a solution if you dissolve 10 grams of sugar in 100 grams of water to yield a total mass of 110 grams?
What is the weight percentage of a solution if you dissolve 10 grams of sugar in 100 grams of water to yield a total mass of 110 grams?
How much NaCl is needed to make 500 grams of a 10% weight/weight (w/w) solution?
How much NaCl is needed to make 500 grams of a 10% weight/weight (w/w) solution?
What is the formula to use when calculating weight/volume percent?
What is the formula to use when calculating weight/volume percent?
Percent volume is the that is the solution volume concentration that is the volume of solute divided by _______ multiplied by 100
Percent volume is the that is the solution volume concentration that is the volume of solute divided by _______ multiplied by 100
What calculation would you use to find the total solution volume of a 5% solution of unknown solution that diluted a 10ml of solute
What calculation would you use to find the total solution volume of a 5% solution of unknown solution that diluted a 10ml of solute
Molarity is the number of _____ of solute per liter of solution abbreviated as M.
Molarity is the number of _____ of solute per liter of solution abbreviated as M.
Molality is the number of moles of solute per _____ of solvent, abbreviated as m.
Molality is the number of moles of solute per _____ of solvent, abbreviated as m.
What is the formula for calculating the grams of solute required to prepare a solution of a specific molarity and volume, given the solute's molar mass?
What is the formula for calculating the grams of solute required to prepare a solution of a specific molarity and volume, given the solute's molar mass?
What is the primary function of dilution in the context of solutions?
What is the primary function of dilution in the context of solutions?
What is the formula you would use to solve a problem with dilution
What is the formula you would use to solve a problem with dilution
Based on the information, what is the correct equation to solve the molarity if you dilute 175 mL of a 1.6 M solution of LiCl to 1.0 L?
Based on the information, what is the correct equation to solve the molarity if you dilute 175 mL of a 1.6 M solution of LiCl to 1.0 L?
According to the image, what is the relationship with particle size in solutions, colloids, and suspensions?
According to the image, what is the relationship with particle size in solutions, colloids, and suspensions?
Which characterization applies to materials of solutions, colloids, and suspensions?
Which characterization applies to materials of solutions, colloids, and suspensions?
Based on image, are particles in suspension large or small?
Based on image, are particles in suspension large or small?
Based on the provided information, what characteristics separates a liquid solution from filtration?
Based on the provided information, what characteristics separates a liquid solution from filtration?
Based on the provided information of colloids, what the key properties that can be determined about colloids?
Based on the provided information of colloids, what the key properties that can be determined about colloids?
What is the phenomenon where light is scattered by particles in a colloid or suspension called?
What is the phenomenon where light is scattered by particles in a colloid or suspension called?
According to the diagram, what is a characteristic of suspensions?
According to the diagram, what is a characteristic of suspensions?
According to the image, what type of solution can sterling silver be categorized as?
According to the image, what type of solution can sterling silver be categorized as?
If a solution contains 50 g of NaCl in 500 g of water, determine the mass of water that must be evaporated to increase the concentration by a factor of five times?
If a solution contains 50 g of NaCl in 500 g of water, determine the mass of water that must be evaporated to increase the concentration by a factor of five times?
A chemist mixes two solutions. What condition is necessary for the combined mixture to be classified as a solution?
A chemist mixes two solutions. What condition is necessary for the combined mixture to be classified as a solution?
Assuming the solute in question 30 is $.25 \frac{g}{mol}$, and solvent is 100 mL, what is the molality?
Assuming the solute in question 30 is $.25 \frac{g}{mol}$, and solvent is 100 mL, what is the molality?
Select the statement below that is NOT true regarding the comparison of the size and properties of a colloid, solution, and suspension
Select the statement below that is NOT true regarding the comparison of the size and properties of a colloid, solution, and suspension
Which of the following changes will always increase the solubility of a solid into a liquid, but decrease the other way?
Which of the following changes will always increase the solubility of a solid into a liquid, but decrease the other way?
When preparing a buffer solution with a target pH different from that of readily available stock solutions, what consideration will the reaction be?
When preparing a buffer solution with a target pH different from that of readily available stock solutions, what consideration will the reaction be?
Flashcards
Solution
Solution
Homogenous mixture of two or more substances in a single physical state.
Solute
Solute
The part of a solution that is being dissolved, typically the lesser amount.
Solvent
Solvent
The part of a solution that dissolves the solute, typically the greater amount.
Solubility
Solubility
Signup and view all the flashcards
Miscible substances
Miscible substances
Signup and view all the flashcards
Immiscible substances
Immiscible substances
Signup and view all the flashcards
Factors affecting dissolving rate
Factors affecting dissolving rate
Signup and view all the flashcards
Dilute solution
Dilute solution
Signup and view all the flashcards
Concentrated solution
Concentrated solution
Signup and view all the flashcards
Unsaturated Solution
Unsaturated Solution
Signup and view all the flashcards
Saturated Solution
Saturated Solution
Signup and view all the flashcards
Supersaturated Solution
Supersaturated Solution
Signup and view all the flashcards
Weight Percent (wt%)
Weight Percent (wt%)
Signup and view all the flashcards
Weight/Volume Percent
Weight/Volume Percent
Signup and view all the flashcards
Volume Percent
Volume Percent
Signup and view all the flashcards
Molarity
Molarity
Signup and view all the flashcards
Molality
Molality
Signup and view all the flashcards
Dilution
Dilution
Signup and view all the flashcards
Alloy
Alloy
Signup and view all the flashcards
Liquid Solutions Features
Liquid Solutions Features
Signup and view all the flashcards
Gas Solutions
Gas Solutions
Signup and view all the flashcards
Suspension
Suspension
Signup and view all the flashcards
Colloids
Colloids
Signup and view all the flashcards
Tyndall Effect
Tyndall Effect
Signup and view all the flashcards
Study Notes
Solutions and Colloids
Solutions
- A solution is a homogenous mixture of two or more substances in a single physical state.
- Solute is the part of a solution that is being dissolved and generally the lesser in amount.
- Solvent is the part of a solution that dissolves the solute and generally the greater in amount.
- Saltwater is a solution, where salt is the solute and water is the solvent.
- Lemonade is a solution, where lemon juice is the solute and water is the solvent.
- Brass is a solution(alloy) of copper, where zinc is the solute and copper is the solvent.
- Vinegar is a solution, where acetic acid is the solute and water is the solvent.
Solubility
- Solubility measures how easily a solute dissolves in a solvent.
- High solubility means the solute dissolves quickly and easily, like salt in water.
- Low solubility means the solute takes longer to dissolve, like sand in water.
Miscible and Immiscible Substances
- Miscible substances mix fully in all proportions, e.g., alcohol and water.
- Immiscible substances never fully mix in any proportions, e.g., oil and water.
Factors Affecting Dissolution Rate
- Properties of the solute and solvent affect the dissolution rate.
- Temperature affects the rate at which a substance dissolves.
- Pressure affects the rate at which a substance dissolves.
Nature of Solute and Solvent
- Salt (polar solute) is more soluble in water (polar solvent) and less soluble in alcohol (non-polar solvent).
- Iodine (non-polar solute) is less soluble in water (polar solvent) and more soluble in alcohol (non-polar solvent).
Temperature Effect Solid and Gas solutes
- The solubility of solid solutes raises in a liquid solvent as temperature raises.
- The solubility of gas solutes decreases in a liquid solvent as temperature raises.
Pressure Effect on Solubility
- Increased pressure or mass of larger molecules raises the solubility of a gas in a liquid solvent.
- Solubility of gases in water at 20°C, with 1 atm gas pressure:
- Nitrogen (N₂) has a solubility of 0.69 x 10⁻³ M
- Carbon monoxide (CO) has a solubility of 1.04 x 10⁻³ M
- Oxygen (O₂) has a solubility of 1.38 x 10⁻³ M
- Argon (Ar) has a solubility of 1.50 x 10⁻³ M
- Krypton (Kr) has a solubility of 2.79 x 10⁻³ M
Factors Affecting Rate of Dissolution
- Increased temperature of the solvent increases the rate of dissolution.
- Increased surface area of the solute increases the rate of dissolution.
- Agitation or stirring of the solution increases the rate of dissolution.
- Higly soluble solutes dissolve more quickly than less soluble solutes in a particular solvent.
Concentration of Solutions
- Dilution - A solution with small amount of solute
- Concentration - A solution with large amount of solute
Qualitative Concentrations
- Unsaturated solutions can still dissolve more solute.
- Saturated solutions have dissolved the maximum possible amount of solute.
- Supersaturated solutions have dissolved more than the normal maximum possible amount of solute.
Calculations
- Important calculations include weight percent, weight/volume percent, volume %, molarity, and molality.
Weight Percent
- Weight percent (wt%) is the mass of the solute divided by the total mass of the solution, multiplied by 100%.
- Weight Percent = (Mass of Solute / Mass of Solution) x 100
Problem set 1 : Weight Percentage of Sodium Chloride
- Dissolving 2.25g of NaCl in 7.45g of H2O, the weight percentage formula is % = (2.35 g / (2.35 g + 7.45 g)) x 100 = 24%.
Problem set 2 : If Sugar Dissovled in in Water
- Dissolving 10 grams of sugar in 100 grams of water, the total mass of the solution is 110 grams and weight percent formula is = (10g / 110g) x100 = 9.09%.
Problem set 3 : How Much NaCl needed
- Needed to make 500 grams of a 10% (wt%) solution, is calculated as 10x100% = gsolute = 50g
Weight/Volume Percent
- Weight/volume percent is defined as the weight of solute (in grams) dissolved in a given volume of solution (in milliliters).
- Weight volume percent is the amount of grams in ml of solution, or (weight /volume) x 100.
Problem Set 1: Calculating weight to volume
- 5 grams of solute is dissolved in 250 milliliters of solution, using the weight to volume formula = (5/250) x 100 = 2%
Problem Set 2: Grams of Salt Needed
- To prepare 250 milliliters of a 4% w/v solution you need the following (4/100) x (250ml solution) = grams of solute, so you need 10grams.
Volume Percent
- Percent volume is: (volume of solute divided by volume of solution) multiplied by 100.
Problem Set 1: Total solution volume:
- To find the total solution volume of a 5% solution of unknown solution that diluted a 10ml of solute: the calculation is 10x100 and then divided by 5 , giving a total of 200ml.
Problem Set 2: Calculating Volume of an Unkown Solution
- With a percent of 5%, the volume will be V ol% =5.0%.
Molarity
- Molarity is the number of moles of solute per liter of solution, abbreviated as M
- Molarity (M) = moles solute /liters of solution
Problem Set 1: How Many Grams of NaBr
- To figure out how grams grams of NaBr (molar mass = 102.9 g/mol)
- Convert it to mol to g, so 0.161mol x 102.9 g/mol= 16.6 g
Problem Set 2: Calculating Molarity
- A solution that was prepared 14.2 g of NaNO3 (molar mass = 85.0 g/mol)in enough water to make 350 mL of solution
- Convert grams to mol, thus 14.2g/85g/mol =0.167Mol
- Formula is 0.167Mol / 0.350 L = 0.47 M
- Convert grams to mol, thus 14.2g/85g/mol =0.167Mol
Problem Set 3: Calculating Molarity for Solution contains 5.5 g HCL
- Contains 5.5 g of HCI (molar mass = 36.5 g/mol)dissolved in enough water to make 250 mL of solution
- Convert into grams, thus 5.5g / 36.5g/mol = 0.15mol
- Final Solution (molarity) is Molarity = 0.15 mol / 0.250 L =0.6M
- Convert into grams, thus 5.5g / 36.5g/mol = 0.15mol
Molality
- Molality is the number of moles of solute per kilogram of solvent, abbreviated as M.
- Molality = moles of solute / kg of solvent
Problem Set 1: Calculate Molality of Solution
- When 7.45 g of potassium chloride (KCI) was dissolved in 100 g of water. Calculate the molality of the solution.
- Converted to grams, 7.45 g/ 74.5 g mol-1 = 0.1 mol
- Molarity = 0.1 mol/ 0.1 L = 1 M
- Converted to grams, 7.45 g/ 74.5 g mol-1 = 0.1 mol
Problem Set 2: Calculate Molality of Solution Dissolving in pure water
- If the you needed to calculate the molality of 25.0 grams of KBr dissolved in 750.0 mL of pure water use the following formula:
- Convert grams to moles =25 g/ 119 g mol-1 = 0.21 mol
- Apply the formula to solve, thus Molality = 0.21 mol / 0.75L =0.28 M
- Convert grams to moles =25 g/ 119 g mol-1 = 0.21 mol
Dilution
- Dilution is adding solvent to decrease the concentration of solute.
- Solution volume changes, the amount of solute is constant.
- Moles of solute (mol) = molarity (M) x volume (V)
- M₁V₁ = M₂V₂
Problem Set 1: Diluting NaOH
- To solve volume dilution problem fo 6.0M NaOH used to prepare 5.00L if 0.10M NaOH
- Calculation is (6.0M) x V₁ = (0.10M)(5.00L)
Problem Set 2: Diluting LiCI, determine new concentration of solution
- The calculation (1.6M)(175mL) = M₂ (1000mL)
Concentration of Solution
- Molarity (M) = Moles of solute/Liter of solution = Mol/L
Solutions vs Colloid vs Suspensions
- Soultion: Particle size less than 1 nm
- Colloid: Particle size 1 nm to 1000 nm
- Suspension: Particle size greater than 1000 nm
Characteristics of solutions
-Solutions is a homogeneous mixture of two or more substance in a single state
- Are small
- Will not separate
- Evenly distribute
Types of Solutions
- Solid
- Liquid
- Gas
- Aqueous
Solid Solutions
- A mixture of metals, also known as Alloys
- Alloys are preferred over pure metals because:
- They resist corrosion
- They have higher melting points
- They are stronger than pure metals
- Alloys are preferred over pure metals because:
- Bronze copper (78-95%), tin 5-22%
- 18K Gold gold(75%), copper (12.5%), silver (12.5%)
- Brass copper (60-90%), zinc (10-35%)
- Cast Iron iron (96-98%), carbon (2-4%)
- Sterling Silver silver (92.5%), copper (7.5%)
Liquid Solutions
- The solute cannot be separated from the solvent by filtration
- It can only be separated by evaporation of the solvent
- The solute particles are not visibile but can produce a colored solution
- Common examples include : liquid cleaners, liquid soap, hydrogen peroxide, disinfectants, vinegar, mouthwash.
Gas Solutions
- Includes gases or vapors dissolved in one another.
- Two or more gases can form a solution. Air is an example
- Composition of Air is 78% nitrogen, 20.9 Percent oxygen, 0.17 Other gases, 0.9 percent carbon, 0.03 carbon dioxide.
Solution, Solute, Solvent Chart
- Gaseous Solutions:
- Gas solute in Gas solvent: Mixture of oxygen and nitrogen gases
- Liquid solute in Gas solvent: Chloroform mixed with nitrogen gas
- Solid solute in Gas solvent: Camphor in nitrogen gas
- Liquid Solutions:
- Gas solute in Liquid solvent: Oxygen dissolved in water
- Liquide solute in Liquid solvent: Ethanol dissolved in water
- Solid solute in Liquid solvent: Glucose dissolved in water
- Solid Solutions:
- Gas solute in Solid solvent: Solution of hydrogen in palladium
- Liquid solute in Solid solvent: Amalgam of mercury with sodium
- Solid solute in Solid solvent: Copper dissolved in gold
Review of Solutions and States
- Solution Air; Solvent nitrogen (gas); Solute(s) other gases
- Solution Carbonated water ; Solvent water (liquid); Solute(s) CO2 (gas)
- Solution Saline solution; Solvent water (liquid); Solute(s) salt (solid)
- Solution Rubbing Alcohol ; Solvent Alcohol (liquid); Solute water (liquid)
- Solution Sterling Silver ; Solvent sliver (solid); Solute(s) copper (solid)
Suspension
- This is where the particles are large that they settle out of the solvent if not constantly stirred.
- Suspensions are typically opaque, cannot pass through a filter
- Muddy water, blood, and paint, are all examples
Colloids
- The particles intermediate in size between those of a suspension and they are able to form a solution.
- They exhibit the Tyndall effect due to the scattering of light by the dispersed particles.
- Examples of colloids include milk, fog, and gelatin
- Gas: (Substance A)
- None for (substance B)
- Liquid
- Liquid Aerosols (Substance A): Fog, hair sprays, Clouds (Substance B).
- Solid
- Solid Aerosols (substance A: Smoke, air particulates (Substance B).
- Liquid: (Substance A)
- Liquid Foam (substance B): Whipped cream, shaving cream
- Emulsion (substance B): Milk, mayonnaise, hand lotion
- Sol (substance B): Pigment ink, blood, paint
- Solid: (Substance A)
- Solid Foam (substance B):Stryrofoam, pumice
- Gel (substance B): Gelatin, jelly
- Solid Sol (substance B): Cranberry glass
- Gas: (Substance A)
Tyndall Effect
- It is the phenomenon where light is scattered by particles in a colloid or suspension, causing the particles to become visible.
Mixtures Overview:
- Can be Separated:
- Distillation separates mixtures.
- Solution Composition:
- Made of a solute dissolved in a solvent.
- Particle Characteristics (Solution):
- Particles do not settle to the bottom.
- Particles cannot be seen.
- Light Interaction (Solution):
- Does not scatter light.
- Colloid Properties:
- Possesses properties of both solutions and suspensions.
- Appearance (Colloid):
- Appears homogenous but is actually heterogeneous.
- Particle Settlement (Colloid):
- Particles do not settle to the bottom.
- Filtration (Colloid):
- Particles cannot be filtered.
- Light Interaction (Colloid):
- Blocks or scatters light.
- Suspension Composition:
- Made of particles.
- Mixture Type (Suspension):
- Heterogeneous mixture.
- Particle Settlement (Suspension):
- Large particles settle to the bottom.
- Filtration (Suspension):
- Particles can be filtered.
- Light Interaction (Suspension):
- Blocks or scatters light.
Overview of Solutions, Colloids, and Suspensions
- Particle Size:
- Solution: Less than 1 nm.
- Colloid: 1 to 100 nm.
- Suspension: More than 100 nm.
- Appearance:
- Solution: Clear.
- Colloid: Cloudy.
- Suspension: Cloudy.
- Separation:
- Solution: Does not separate.
- Colloid: Does not separate.
- Suspension: Separates or settles.
- Filterability:
- Solution: Passes through the filter paper.
- Colloid: Passes through the filter paper.
- Suspension: Particles do not pass through filter paper.
- Effect of Beam of Light:
- Solution: Light can pass through.
- Colloid: Scatters light.
- Suspension: Light cannot pass through.
- Examples:
- Solution: Salt solution.
- Colloid: Mayonnaise.
- Suspension: Muddy water.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Explore the characteristics of solutions, including the roles of solute and solvent. Understand solubility, and differentiate between miscible and immiscible substances. Examples like saltwater, lemonade, and brass are discussed.