30 Questions
What is the primary difference between a suspension and a colloid?
The size of the particles
What is the characteristic of strong electrolytes in solution?
They conduct an electric current well.
Which of the following is an example of a strong electrolyte?
NaCl
What is the unit of solubility?
Grams of solute per 100 mL of solution
What is the primary characteristic of a nonelectrolyte?
It does not conduct electricity
What is the key principle of solubility?
Like dissolves like.
What is the primary difference between a solution and a colloid?
The particle size
What happens to the components of a suspension?
They settle to the bottom
What type of compounds are usually soluble in water?
Ionic and polar covalent compounds
What is an example of a weak electrolyte?
H2CO3
What is the term for the maximum amount of solute that can dissolve in a given amount of solvent?
Saturated solution
What type of compounds do not conduct an electric current?
Nonelectrolytes
What is the molar mass of NaOH used in the calculation of molarity?
40.0 g/mol
What is the conversion factor used to convert milliliters of solution to liters of solution?
1000 mL/L
What is the unit of molarity?
mol/L
What is the formula to calculate molarity?
M = moles of solute / liter of solution
How many liters of solution are in 250 mL of solution?
0.25 L
What is the molarity of the sodium hydroxide solution?
2.0 M
What is the concentration of a solution that contains 30 mL of 2-propanol in 120 mL of solution?
25%
What is the unit of concentration that represents the number of moles of solute per liter of solution?
Molarity
If a solution contains 0.5 g of solute in 100 g of solution, what is the concentration of the solution in ppm?
5000 ppm
What is the concentration of a solution that contains 20 mL of solute in 100 mL of solution, if the density of the solution is 1.0 g/mL?
20%
If a solution contains 2.5 g of NaCl in 250 mL of solution, what is the molarity of the solution?
0.1 M
What is the maximum level of lead allowed in drinking water in units of ppm?
1.5 × 10^–2 ppm
What is the concentration of a solution formed by diluting 5.0 mL of a 3.2 M glucose solution to 40.0 mL?
0.40 M
If 45 g NaCl is added to 150 grams of water, what is the resulting solution?
Unsaturated
What is the molarity of a solution containing 117 g of potassium hydroxide (KOH) dissolved in 2.00 L of water?
2.08 M
Which of the following is a step in solving a dilution problem?
Write the equation and isolate M2 on one side.
What is the unit of measurement that cancels out when solving a dilution problem?
Milliliters
What is the ratio of NaCl to water in the solution described in the activity?
30 g NaCl/100 g H2O
Test your knowledge of colloids and suspensions, including their characteristics, particle sizes, and separation techniques. Learn to differentiate between solutions, colloids, and suspensions. Understand the properties of each type of mixture
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