Chapter 5, Problem 5A.4E

(a)

Interpretation Introduction

Interpretation:

Using the vapour pressure curve, the boiling point of benzene has to be estimated when the atmospheric pressure is $\text{50kPa}$

Concept Introduction:

Clausius-Clapeyron equation IS:

    $\begin{array}{l}\text{ln}\frac{{\text{P}}_{\text{2}}}{{\text{P}}_{\text{1}}}\text{=}\frac{{\text{ΔH}}_{\text{vap}}^{\text{o}}}{\text{R}}\left[\frac{\text{1}}{{\text{T}}_{\text{1}}}\text{-}\frac{\text{1}}{{\text{T}}_{\text{2}}}\right]\\ {\text{ΔH}}_{\text{vap}}^{\text{o}}\text{=Enthalpy of vaporization}\\ \text{R=Universal gas constant}\\ {\text{P}}_{\text{2}}{\text{=partial pressure at temperature T}}_2\\ {\text{P}}_1{\text{=partial pressure at temperature T}}_{\text{1}}\end{array}$

(b)

Interpretation Introduction

Interpretation:

Using the vapour pressure curve, the boiling point of benzene has to be estimated when the atmospheric pressure is $\text{80kPa}$

Concept Introduction:

Refer to part (a).