Practice Solubility in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

The maximum amount of a solute that can dissolve in a given quantity of solvent at a specific temperature and pressure, typically expressed as grams.

How much can dissolve before no more will. Sugar: high solubility. Sand: zero.

Example 1

easy
Define solubility and explain how temperature generally affects the solubility of solids and gases in water.

Example 2

medium
Using a solubility curve, determine how many grams of \text{KClO}_3 can dissolve in 100 g of water at 80°\text{C} if the solubility is 40\,\text{g/100 g water}. If the solution is cooled to 30°\text{C} where the solubility is 10\,\text{g/100 g water}, how much crystallizes out?

Example 3

medium
At 25°\text{C}, the solubility of \text{CaSO}_4 is 0.21\,\text{g/100 mL}. If a student adds 1.0 g of \text{CaSO}_4 to 200 mL of water, will it all dissolve? How much remains undissolved?

Example 4

hard
Explain why a scuba diver must ascend slowly, using the concept of gas solubility and Henry's Law. What happens to the dissolved nitrogen in the diver's blood as pressure decreases?
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