Chapter 4, Problem 4I.12E

Interpretation Introduction

Interpretation:

The entropy change for the system and the surrounding is to be accounted for the given process to be spontaneous.

Concept Introduction:

According to thermodynamics’ law, a particular process’s spontaneity is decided by estimating its total entropy change by the expression.

    $\Delta S_{\text{total}}=\Delta S_{\text{system}}+\Delta S_{\text{surrounding}}$

This total entropy change in then substituted in the expression given below.

  $\Delta G_{\text{total}}=\Delta H_{\text{total}}-T\Delta S_{\text{total}}$ to find if the given process’s feasibility.

For feasibility, the overall $\Delta G_{\text{total}}$ should be negative.