Chapter 18, Problem 18.126MP

Interpretation Introduction

(a)

Interpretation:

The reliability of Trouton’s rule should be checked for all the liquids.

Concept introduction:

Trouton’s rule suggests that mathematical ratio of $\Delta H_{\text{vap}}$ to $T_{\text{bp}}$ is equal to $88\text{ J/K}\cdot \text{mol}$ and this value is fairly constant for all liquids.

Interpretation Introduction

(b)

Interpretation:

The reason behind similar values of $\Delta H_{\text{vap}}$ to $T_{\text{bp}}$ for all liquids should be explained.

Concept introduction:

Trouton’s rule suggests that mathematical ratio of $\Delta H_{\text{vap}}$ to $T_{\text{bp}}$ is equal to $88\text{ J/K}\cdot \text{mol}$ and this value is fairly constant for all liquids.

Interpretation Introduction

(c)

Interpretation:

Liquids that deviate from ideal gas law should be listed.

Concept introduction:

Trouton’s rule suggests that mathematical ratio of $\Delta H_{\text{vap}}$ to $T_{\text{bp}}$ is equal to $88\text{ J/K}\cdot \text{mol}$ and this value is fairly constant for all liquids. Mathematical ratio of $\Delta H_{\text{vap}}$ to $T_{\text{bp}}$ is essentially equal to $\Delta S_{\text{vap}}$. This entropy factor is almost similar for each liquid as they undergo phase transition from liquid to gas and thus carry equal amount of randomness.