Chapter 4, Problem 4I.3AST

(a)

Interpretation Introduction

Interpretation:

The value of $\Delta \text{S}$, $\Delta {\text{S}}_{surr}$ and $\Delta {\text{S}}_{tot}$ for reversible and isothermal expansion of ideal gas molecules has to be determined.

Concept Introduction:

The degree of randomness in a system is the predicted according to its respective entropy.  Higher the entropy, greater will be the disorder in the system.   The mathematical expression for the calculation of entropy of the system is shown below.

$\Delta \text{S}=\text{nR}\text{ln}\left(\frac{{\text{V}}_2}{{\text{V}}_1}\right)$

(b)

Interpretation Introduction

Interpretation:

The value of $\Delta \text{S}$, $\Delta {\text{S}}_{surr}$ and $\Delta {\text{S}}_{tot}$ for isothermal free expansion of ideal gas molecules has to be determined.

Concept Introduction:

Refer part (a).