Chapter 13, Problem 17E

Interpretation Introduction

Interpretation:

The substance which would follow the Trouton’s rule most closely should be identified.

Concept introduction:

Trouton's ruleis a generalization which states that for most of the liquids the value of the entropy of vaporization is approximately 85 J /mol K. The mathematical expression for Trouton’s rule is:

$\text{ΔS}°\text{vap = }\frac{\text{ΔH}°\text{vap}}{\text{Tbp}}\text{ = 85 J/mol}\text{.K}$

Here, $\text{ΔS}°\text{vap }$ indicates the standard entropy of vaporization and $\text{ΔH}°\text{vap }$ is the standard enthalpy of vaporization whereas T_bp is the boiling point of substance.