Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

6. Chemical Quantities & Aqueous Reactions

Solubility Rules

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Solubility Rules

Previous problemNext problem

Struggling with General Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following methods would increase the solubility of a gas in water?

Increasing the temperature of the water

Decreasing the pressure above the solution

Decreasing the temperature of the water

Adding a salt to the solution

Previous problemNext problem

Verified step by step guidance

Recall Henry's Law, which states that the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid. Mathematically, this is expressed as $C = k_H \times P$, where $C$ is the concentration (solubility) of the gas, $k_H$ is Henry's law constant, and $P$ is the partial pressure of the gas.

Understand the effect of temperature on gas solubility: Generally, the solubility of gases in water decreases as temperature increases because gas molecules gain kinetic energy and escape more easily from the solution.

Analyze the effect of pressure changes: Increasing the pressure above the solution increases gas solubility, while decreasing the pressure reduces it, according to Henry's Law.

Consider the effect of adding salt (salting out effect): Adding salt to water usually decreases the solubility of gases because the salt ions compete with gas molecules for space in the solvent.

Conclude that to increase the solubility of a gas in water, you should decrease the temperature or increase the pressure above the solution, but not add salt.