Chapter 18, Problem 24QP

Interpretation Introduction

Interpretation:

The free energy of the system is to be defined. Also, its unit is to be identified.

Concept introduction:

Gibbs free energy $(G)$ of a system is the amount of free energy available in the system to do some useful work.

Mathematically, Gibbs free energy of a system is given as:

$G\text{}=H-TS$

Here, $H$ is the enthalpy, $S$ is the entropy, and $T$ is the temperature of the system.