Understanding Aqueous Solutions and Dissolution

Which of the following best describes a solute in an aqueous solution?

• The substance that dissolves in a solvent

• The substance that does the dissolving

• The liquid part of the solution

• The gas part of the solution

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DOK Level 1: Recall

What happens to the concentration of a solution if more solute is added to it?

• The concentration decreases

• The concentration remains the same

• The concentration increases

• The concentration becomes zero

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DOK Level 1: Recall

Which of the following methods can be used to dilute a solution?

• Adding more solute

• Adding more solvent

• Heating the solution

• Stirring the solution

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DOK Level 1: Recall

Describe how increasing the surface area of a solid solute affects its rate of dissolution in an aqueous solution.

• It decreases the rate of dissolution

• It has no effect on the rate of dissolution

• It increases the rate of dissolution

• It makes the solute insoluble

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DOK Level 2: Skill/Concept

How does agitation (stirring) affect the rate of dissolution of a solid solute in an aqueous solution?

• It decreases the rate of dissolution

• It has no effect on the rate of dissolution

• It increases the rate of dissolution

• It makes the solute insoluble

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DOK Level 2: Skill/Concept

If the temperature of an aqueous solution is increased, what is the likely effect on the rate of dissolution of a solid solute?

• The rate of dissolution decreases

• The rate of dissolution remains the same

• The rate of dissolution increases

• The solute becomes insoluble

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DOK Level 2: Skill/Concept

Which of the following best describes a solvent in an aqueous solution?

• The substance that dissolves in a solute

• The substance that does the dissolving

• The solid part of the solution

• The gas part of the solution

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DOK Level 1: Recall

What is the effect of increasing the temperature on the solubility of most solid solutes in water?

• Solubility decreases

• Solubility remains the same

• Solubility increases

• Solubility becomes zero

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DOK Level 2: Skill/Concept

Which of the following is an example of a simple procedure to dilute a concentrated solution?

• Adding more solute

• Adding more solvent

• Heating the solution

• Cooling the solution

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DOK Level 1: Recall

Explain how surface area affects the rate of dissolution of a solid solute in an aqueous solution.

• Larger surface area decreases the rate of dissolution

• Larger surface area has no effect on the rate of dissolution

• Larger surface area increases the rate of dissolution

• Larger surface area makes the solute insoluble

Tags

DOK Level 2: Skill/Concept