Chapter 21, Problem 47E

Interpretation Introduction

Interpretation: The vapor pressure of the pure solvent and the vapor pressure of its solution with a nonvolatile solute at the same temperature is given. The ideality of the solution is to be determined.

Concept introduction: The given solution is ideal if it obeys Raoult’s law.
The Raoult’s law is given as,

$\begin{array}{l}\text{Vapor}\text{pressure}\text{of}\text{the}\text{solution}\\ =\text{Mole}\text{fraction}\text{of}\text{the}\text{solvent}\times \text{Vapor}\text{pressure}\text{of}\text{the}\text{pure}\text{solvent}\end{array}$