Chapter 16, Problem 54A

Interpretation Introduction

Interpretation: The effect of pressure on the solubility of gases is to be stated.

Concept Introduction: The pressure exerted by the gas molecules on liquid is known as partial pressure.

Answer to Problem 54A

The solubility of the gases is directly proportional to the pressure as it increases on an increase in pressure and visa versa.

Explanation of Solution

Pressure plays an important role in the solubility of the gas molecule in liquid. The dependency of the solubility of the gas molecule on pressure can be explained by Henry’s Law which states that at a constant pressure the solubility of the gas molecule in the liquid is directly proportional to the partial pressure of the gas molecule.

The expression that shows the relationship between pressure and gas concentration according to Henry’s law is as follows:

  $S=K_{H}P$

Here, S is the solubility, P is the pressure, and $K_H$ is Henry’s Constant.