Chapter 14, Problem 97A

Interpretation Introduction

Interpretation:

The variables representing the boiling point elevationequation have to be identified.

Concept introduction:

Boiling point elevation can be calculated as follows:

$\Delta {\mathrm{T}}_b=K_b\times m$

Answer to Problem 97A

Boiling point elevation is expressed as:

$\Delta {\mathrm{T}}_b=K_b\times m$

Where,

$\Delta {\mathrm{T}}_b$ is the elevation of boiling point and also known as the boiling point difference between a solution and the pure solvent.

$K_b$ is the molal boiling point elevation constant.

$m$ is the molality of the solution.

Explanation of Solution

When a non-volatile, non-electrolyte solute is added to a solvent, the boiling point of the resulting solution will be greater than the boiling point of the pure solvent.

For nonvolatile and nonelectrolyte solutes, the elevation of the boiling point is directly proportional to molalityof the solution.

Boiling point elevation $\Delta {\mathrm{T}}_b=K_b\times m$

Where,

$\Delta {\mathrm{T}}_b$ is the elevation of boiling point and also known as the boiling point difference between a solution and the pure solvent.

$K_b$ is the molal boiling point elevation constant.

$m$ is the molality of the solution.