Chapter 17, Problem 43E

Interpretation Introduction

Interpretation: The vapor pressure of pure ethanol at $40°\text{C}$ needs to be determined.

Concept introduction: Vapor pressure or an equilibrium vapor pressure of a substance is a pressure exerted by the vapors in thermodynamic equilibrium with its condensed phase (like liquid or solid) at the given temperature in a closed system. It can be calculated as: ${\text{P}}_{\text{soln}}\text{=}{\chi }_{\text{solvent}}\text{×}{\text{P}}_{\text{solvent}}^{\text{0}}$