Solubility Review

In a solution, the solvent is

• The substance being dissolved.

• The substance present in the smallest amount.

• The substance present in the greatest amount.

• Never water.

A crystal of solid NaCl is placed into water. It is observed that most, but not all, of the crystal dissolves. This solution must be

• Unsaturated

• Saturated

• Supersaturated

• Dilute

Increasing the surface area of the solute

• Allows the solute to dissolve solute.

• Has no effect on the dissolving rate.

• Can increase, decrease, or have no effect on the dissolving rate.

• Allows the solute to dissolve faster.

Which of the following would not increase the rate at which a solid dissolves?

• Decreasing the temperature

• Crushing the solid

• Stirring

• Increase the temperature

A solution that contains a large amount of solute is best described as

• Unsaturated

• Concentrated

• Dilute

• Weak

Can 50 grams of sodium chloride dissolve in 100 mL of water at 60*C?

• Yes, this is a saturated solution.

• Yes, this is an unsaturated solution

• No, this is an unsaturated solution.

• No, this is a supersaturated solution.

How much cerium sulfate is needed to make a saturated solution in 100 mL of water at 30*C?

• Above 40 grams.

• Between 0 and 20 grams.

• Between 20 grams and 40 grams.

• Below 0 grams.

If 200 grams of sodium chlorate is dissolved in 100 mL of water at 60*C, this solution is considered

• Unsaturated

• Saturated

• Supersaturated

• Dilute

Why does crushing a solid increase the speed at which the solid dissolves?

• Crushing causes the solute particles to separate from one another and spread out more quickly among the solvent particles.

• Crushing causes particles to move more quickly, causing them to spread out more quickly.

• Crushing increases the amount of contact between the solute and the solvent.

• Crushing does not affect the speed at which a solid dissolves.

Why does heating increase the speed at which a solid dissolves?

• Heating causes the solute particles to separate from one another and spread out more quickly among the solvent particles.

• Heating causes particles to move more quickly, causing them to spread out more quickly.

• Heating increases the amount of contact between the solute and the solvent.

• Heating does not affect the speed at which a solid dissolves.