Chapter 11.2, Problem 1PPA

Interpretation Introduction

Interpretation:

The vapor pressure of ethanol at $\text{55}{\text{.8}}^{\circ }\text{C }$ is to be determined.

Concept introduction:

The relationship between vapor pressure and temperature is given by the Clausius–Clapeyron equation as:

$\log \left(\frac{P_1}{P_2}\right)=\frac{\Delta {\text{H}}_{vap}}{\text{R}}\left(\frac{1}{T_2}-\frac{1}{T_1}\right)$.

Here, $\Delta {\text{H}}_{vap}$ is the molar heat of vaporization, $\text{R}$ is the gas constant, $P_1\text{ and }{P}_2$ are the vapor pressures, and $T_1\text{ and }{T}_2$ are the temperatures.