Chapter 14, Problem 119A

Interpretation Introduction

Interpretation:

The solubility data of a gas have to be described using Henry’s Law.

Concept introduction:

Solubility: Solubility can be expressed as maximum amount of solute that can dissolve in a known amount of solvent at a given temperature and pressure.

Henry’s Law: The solubility of a gas in liquid is directly proportional to the pressure of the gas above the liquid at a certain temperature.

$\mathrm{S}\propto P$

Answer to Problem 119A

This table indicates that the solubility of the gas is increasing by doubled in each measurements. To get solubility of the gas by twice times, the pressure of the gas should be doubled in each measurement. Between measurement 1 andmeasurement 4, the solubility has increased by 8 times, so the pressure should be increased by 8 times.

Explanation of Solution

According to Henry’s Law, the solubility of a gas in liquid is directly proportional to the pressure of the gas. This table indicates that the solubility of the gas is increasing by doubled in each measurements. To get solubility of the gas by twice times, the pressure of the gas should be doubled in each measurement. Between measurement 1 and measurement 4, the solubility has increased by 8 times, so the pressure should be increased by 8 times.