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Questions and Answers
Which of the following actions would likely NOT increase the rate at which a solid solute dissolves in a liquid solvent?
Which of the following actions would likely NOT increase the rate at which a solid solute dissolves in a liquid solvent?
- Decreasing the surface area of the solute.
- Increasing the temperature of the solvent.
- Increasing the pressure on the solution. (correct)
- Stirring the mixture vigorously.
A solution contains more solute than it can theoretically hold at a given temperature and pressure. This solution is best described as:
A solution contains more solute than it can theoretically hold at a given temperature and pressure. This solution is best described as:
- Miscible
- Unsaturated
- Supersaturated (correct)
- Saturated
Two liquids mix to form a solution. What term accurately describes this characteristic?
Two liquids mix to form a solution. What term accurately describes this characteristic?
- Saturated
- Soluble
- Miscible (correct)
- Insoluble
What is the significance of the phrase 'like dissolves like' in the context of solutions?
What is the significance of the phrase 'like dissolves like' in the context of solutions?
Why is dissolving sugar in water considered a physical process rather than a chemical change?
Why is dissolving sugar in water considered a physical process rather than a chemical change?
Gases become more soluble in liquids under certain conditions. Which of the following sets of conditions would increase the solubility of a gas in a liquid solvent?
Gases become more soluble in liquids under certain conditions. Which of the following sets of conditions would increase the solubility of a gas in a liquid solvent?
In a solution of salt water, which component is the solute?
In a solution of salt water, which component is the solute?
What is the term that describes the interaction of solvent molecules, specifically water (H2O), with solute particles to stabilize them in a solution?
What is the term that describes the interaction of solvent molecules, specifically water (H2O), with solute particles to stabilize them in a solution?
Which of the following is a key difference between a suspension and a colloid?
Which of the following is a key difference between a suspension and a colloid?
Which of the following is NOT a method used to increase the solubility of a solid or liquid solute?
Which of the following is NOT a method used to increase the solubility of a solid or liquid solute?
A chemist observes a clear liquid in a beaker. Upon closer inspection, they notice that the composition is uniform throughout. This substance is most likely a:
A chemist observes a clear liquid in a beaker. Upon closer inspection, they notice that the composition is uniform throughout. This substance is most likely a:
Which of the following best describes a mixture in which the components are not uniform throughout?
Which of the following best describes a mixture in which the components are not uniform throughout?
In the context of mixtures and solutions, what distinguishes a pure substance from a mixture?
In the context of mixtures and solutions, what distinguishes a pure substance from a mixture?
If a solid substance is described as 'soluble' in water, what does this indicate?
If a solid substance is described as 'soluble' in water, what does this indicate?
You have two beakers, one with a suspension and the other with a colloid. How could you quickly distinguish between them without using a microscope?
You have two beakers, one with a suspension and the other with a colloid. How could you quickly distinguish between them without using a microscope?
Which of the following is NOT a characteristic of mixtures?
Which of the following is NOT a characteristic of mixtures?
When a gas is dissolved in a liquid, an increase in which factor will generally decrease the gas's solubility?
When a gas is dissolved in a liquid, an increase in which factor will generally decrease the gas's solubility?
What is the fundamental difference in formation between mixtures and compounds?
What is the fundamental difference in formation between mixtures and compounds?
A solution is prepared by dissolving 20g of a solid in 100mL of water at room temperature, and some solid remains undissolved at the bottom of the beaker. After heating the solution to 50°C, all the solid dissolves. Which term best describes the original solution at room temperature?
A solution is prepared by dissolving 20g of a solid in 100mL of water at room temperature, and some solid remains undissolved at the bottom of the beaker. After heating the solution to 50°C, all the solid dissolves. Which term best describes the original solution at room temperature?
If a substance does not dissolve in another, it is said to be:
If a substance does not dissolve in another, it is said to be:
Flashcards
What is the solute?
What is the solute?
The substance that dissolves in a solution.
What is the solvent?
What is the solvent?
The substance that does the dissolving in a solution.
What is a supersaturated solution?
What is a supersaturated solution?
A solution containing more solute than normally possible at a given temperature and pressure.
What is dissolving?
What is dissolving?
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What is the meaning of 'miscible'?
What is the meaning of 'miscible'?
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How to increase the solubility of solids or liquids?
How to increase the solubility of solids or liquids?
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How does pressure affect gas solubility?
How does pressure affect gas solubility?
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What does it mean if a substance is 'soluble'?
What does it mean if a substance is 'soluble'?
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What are homogeneous mixtures?
What are homogeneous mixtures?
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What are heterogeneous mixtures?
What are heterogeneous mixtures?
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What are pure substances?
What are pure substances?
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What are mixtures?
What are mixtures?
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What is the general rule for solubility?
What is the general rule for solubility?
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What is hydration?
What is hydration?
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What is unique to a suspension?
What is unique to a suspension?
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Study Notes
- Saturated solutions are on the solubility line.
- Unsaturated solutions are below the solubility line.
- Supersaturated solutions are above the solubility line.
- A solute is the substance that dissolves.
- A solvent is the substance that does the dissolving.
- Supersaturated solutions contain more solute than can normally dissolve at a given temperature and pressure.
- Dissolving is a physical process because no new substances are created.
- Miscible refers to two liquids that can form a solution.
Factors Increasing Solubility of Solid or Liquid Solutes:
- Stirring/mixing (agitation) increases solubility.
- Increasing surface area increases solubility.
- Increasing temperature increases solubility.
- Pressure only affects the solubility of gases.
- As pressure increases on a gas, its solubility increases.
- Increasing the temperature of a gas decreases its solubility.
- If a substance dissolves in another, it is soluble.
- Homogeneous mixtures are also called solutions and are uniform.
- Heterogeneous mixtures are not uniform throughout.
- Pure substances are elements and compounds.
- Mixtures are physical combinations of pure substances without chemical reactions or new substances formed.
- "Like dissolves like" is the general rule for solubility, referring to molecular polarity.
- Polar substances dissolve polar substances; nonpolar substances dissolve nonpolar substances.
- Hydration is the term for solvation when the solvent is water (H2O).
- Suspensions have particles that settle out and can be filtered, while colloids do not.
- Suspensions and colloids are both types of heterogeneous mixtures.
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