Chapter 16, Problem 67A

Interpretation Introduction

Interpretation: The reason of the fact that a decrease in the vapor pressure of a solution results in an increased boiling point is to be explained.

Concept Introduction:

Vapour pressure is the measure of the capability of a liquid or solid to change into a vapor state with an increase in temperature.

The boiling point in relation to vapor pressure can be defined as the temperature at which the vapor pressure of a liquid equals the surrounding pressure.

Explanation of Solution

The intermolecular force of the solid and liquid are more compared to the gases/vapor. Due to this, the molecules are strongly attracted to one another, and the vapor pressure will be low. If the vapor pressure is low, a lot of energy is required to separate the molecules, thereby increasing the boiling point.