Chapter 18, Problem 38QP

Interpretation Introduction

Interpretation:

The difference between $\Delta G$ and $\Delta G^{°}$ is to beexplained.

Concept introduction:

$\Delta G$ is the actual free energy. It is a thermodynamic function and also known as Gibbs free energy.

The change in free energy, $\Delta G$, of a system for a process that occurs at constant temperature is: $\text{ΔG= ΔH-TΔS}$

$\Delta G^{°}$ is the standard free energy change. It is the representation of free energy change under standard conditions.

At Standard Temperature and Pressure, STP,

$\text{Temperature = 273}\text{.15K and Pressure = 1 atm}$.