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 of solute per 100 mL of solvent. Beyond this limit, additional solute remains undissolved.
How much can dissolve before no more will. Sugar: high solubility. Sand: zero.
Example 1
easyDefine solubility and explain how temperature generally affects the solubility of solids and gases in water.
Example 2
mediumUsing 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
mediumAt 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
hardExplain 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?