Question

"The solubility of a gas in a liquid (at constant temperature) is directly proportional to the partial pressure of that gas in equilibrium with the liquid" is best described by:

• A. Raoult's law
• B. Dalton's law
• C. Boyle's law
• D. Henry's law

Hint:

Think "H" for Henry and "H" for Highly pressurized soda cans (gas solubility).

Answer 1

The Correct Option is D

Step 1: Concept
This statement defines the relationship between gas pressure and its solubility in a solvent.

Step 2: Analysis
Henry's Law states that $C = kP$, where $C$ is the solubility/concentration, $k$ is the Henry's law constant, and $P$ is the partial pressure.

Step 3: Reasoning
Raoult's law deals with vapor pressure of solutions, Dalton's law with total pressure of gas mixtures, and Boyle's law with P-V relationships. Only Henry's law describes gas solubility in liquids.

Step 4: Conclusion
The definition provided perfectly matches Henry's Law. Final Answer: (D)