Question

The solubility of a gas in a liquid is directly proportional to the pressure of the gas. This statement is:

• A. Raoult's law
• B. Henry's law
• C. Van 't Hoff's law
• D. None of these

Answer 1

The correct option is B Henry's law

Henry's law states that at a constant temperature, the solubility of a gas is directly proportional to the pressure of the gas.

In other words, The partial pressure of the gas in vapour phase (p) is proportional to the mole fraction of the gas (x) in the solution.

$p=K_H$ $x$

Here, $K_H$ is the Henry's law constant.

Hence, the given statement is Henry's law.