Chapter 18, Problem 18.4VP

Interpretation Introduction

Interpretation: The box depicted on the left side is representated by the mixture of two diatomic gases, ${\text{A}}_{\text{2}}$ (red spheres) and ${\text{B}}_{\text{2}}$ (blue spheres). The change in entropies of ${\text{A}}_{\text{2}}$ and ${\text{B}}_{\text{2}}$ as the result of the process depicted by the arrow is to be stated.

Concept introduction: Entropy is a thermodynamic property which shows the randomness or disorder of the atoms within the system.

In the spontaneous process, the entropy of the system increases when one phase changes to another phase in an isolated system according to second law of thermodynamic.

To determine: The change in entropies of ${\text{A}}_{\text{2}}$ and ${\text{B}}_{\text{2}}$ as the result of the process depicted by the arrow.