Chapter 13, Problem 90IAE

Interpretation Introduction

Interpretation:

The temperature at which the vapor pressure of cyclohexane is 100.0 mmHg needs to be determined.

Concept introduction:

The standard entropy and standard enthalpy of vaporization is related to boiling point with formula

$\text{ΔSvap ° = }\frac{\text{ΔHvap °}}{\text{Tb}}$

The Clausius−Clapeyron relation expresses the relation between the pressure with enthalpy and temperature. The mathematical expression for Clausius−Clapeyron relation can be written as

$\text{ln }\frac{\text{P1}}{\text{P2}}\text{ = }\frac{\text{ΔHvap °}}{\text{R}}\left(\frac{\text{1}}{\text{T2}}\text{-}\frac{\text{1}}{\text{T1}}\right)$