Chapter 12, Problem 12.14QP

Interpretation Introduction

Interpretation:

The reason for higher boiling point of solution containing non-volatile solute compare to that of the pure solvent has to be explained.

Concept Introduction:

A substance is said to be volatile if it vaporizes readily at room temperature itself.  Such substances have high vapor pressure as most of its molecules tend to exist in vapor phase.  A substance is said to be non-volatile if it doesn’t vaporize spontaneously.

Boiling point of a liquid is defined as the temperature at which the vapor pressure of liquid becomes equal to atmospheric pressure.

Vapor pressure of a substance is known as the pressure exerted by molecules on the vapor phase when they are in equilibrium with their actual phase which can be liquid or solid.