Chapter 9, Problem 7QAP

(a)

Interpretation Introduction

Interpretation:

The heat of vaporization of chloroform is to be calculated using the given data.

Concept Introduction :

Clausius-Clapeyron Equation is an expression that relates the vapor pressure of a liquid at two different temperatures with the enthalpy of vaporization of the liquid. The expression is given as

  $\ln \frac{P_2}{P_1}=\frac{\Delta H_{vap}}{R}\left[\frac{1}{T_1}-\frac{1}{T_2}\right]$

P₁ = vapor pressure at temperature T₁

P₂ = vapor pressure at temperature T₂

  $\Delta H_{vap}$ = Enthalpy of vaporization of the liquid

R = Ideal gas constant = 8.314 J/Kmol

(b)

Interpretation Introduction

Interpretation:

The normal boiling point of chloroform under given conditions is to be calculated.

Concept Introduction :

Clausius-Clapeyron Equation is an expression that relates the vapor pressure of a liquid at two different temperatures with the enthalpy of vaporization of the liquid. The expression is given as

  $\ln \frac{P_2}{P_1}=\frac{\Delta H_{vap}}{R}\left[\frac{1}{T_1}-\frac{1}{T_2}\right]$

P₁ = vapor pressure at temperature T₁

P₂ = vapor pressure at temperature T₂

  $\Delta H_{vap}$ = Enthalpy of vaporization of the liquid

R = Ideal gas constant = 8.314 J/Kmol