Understanding Aqueous Solutions and Dissolution

What is the role of a solute in an aqueous solution?

• It is the substance that dissolves in the solvent.

• It is the liquid that dissolves the solvent.

• It is the gas that evaporates from the solution.

• It is the solid that forms a precipitate.

Which factor does NOT affect the rate of dissolution of a solid solute in an aqueous solution?

• Temperature

• Surface area

• Agitation

• Color of the solute

How does increasing the temperature generally affect the solubility of a solid solute in water?

• It decreases the solubility.

• It has no effect on the solubility.

• It increases the solubility.

• It causes the solute to evaporate.

What happens to the concentration of a solution when more solute is added to a fixed amount of solvent?

• The concentration decreases.

• The concentration remains the same.

• The concentration increases.

• The solution becomes saturated.

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

• It is the substance that is dissolved.

• It is the substance that does the dissolving.

• It is the solid that forms a precipitate.

• It is the gas that evaporates.

How does increasing the surface area of a solid solute affect its rate of dissolution in water?

• It decreases the rate of dissolution.

• It has no effect on the rate of dissolution.

• It increases the rate of dissolution.

• It causes the solute to evaporate.

What is the effect of stirring (agitation) on 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 causes the solute to precipitate.

If a solution is diluted, what happens to the concentration of the solute?

• The concentration increases.

• The concentration decreases.

• The concentration remains the same.

• The solute precipitates out.

Which of the following is an example of an aqueous solution?

• Oil in water

• Salt in water

• Sand in water

• Air in water

Which of the following statements is true about the effect of temperature on the rate of dissolution of a solid solute in water?

• Higher temperatures decrease the rate of dissolution.

• Higher temperatures increase the rate of dissolution.

• Temperature has no effect on the rate of dissolution.

• Higher temperatures cause the solute to precipitate.