Chapter 6, Problem 6.36E

Interpretation Introduction

Interpretation:

The rate of change of pressure as temperature changesfor the vapor pressure of naphthalene ${\text{C}}_{\text{10}}{\text{H}}_{\text{8}}$ is to be calculated.

Concept introduction:

The relation between rates of change of vapor pressure with temperature is given by Clapeyron equation as given below.

$\frac{dp}{dT}=\frac{{\Delta }_{\text{tran}}\overline{H}}{T_{\text{tran}}{\Delta }_{\text{tran}}\overline{V}}$

In the above equation, $dp$ is the change in pressure, ${\Delta }_{\text{tran}}\overline{H}$ is the change in enthalpy of transition, ${\Delta }_{\text{tran}}\overline{V}$ is the change in volume of substance and $T_{\text{tran}}$ is the temperature at which transition occur.