Chapter 11, Problem 74RQ

Interpretation Introduction

Interpretation:

The value of gas constant (R) used in the Clausius- Clapeyron equation is to be determined.

Concept Introduction:

The relationship between vapor pressure and temperature is given by 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 vaporisation, $\text{R}$ is the gas constant, $P_1\&P_2$ are the vapor pressure and $T_1\&T_2$ are the temperatures.