Chapter 13, Problem 59QP

Interpretation Introduction

Interpretation:

The vapor pressure of the solution, formed by dissolving $\text{24}\text{.6 g}$ of camphor in given amount of benzene, is to be calculated.

Concept introduction:

According to the Raoult’s law, in a binary solution if $P_1$ is the vapor pressure of the solvent, ${\chi }_1$ is its mole fraction, and $P_{\text{A}}{}^{°}$ is it’s vapor pressure in pure state then the relation is given as follows:

$P_1={\chi }_1{P}_1{}^{°}$

Mole fraction is defined as the ratio of number of moles of a specific solute to the total number of moles present in the solution.

Mathematically mole fraction of component A can be expressed as follows:

${\chi }_{\text{A}}=\frac{\text{moles of component A}}{\text{Sum of moles oa all component}}$

$\text{No}\text{. of moles}=\frac{\text{mass }}{\text{molar mass }}$