Chapter 14.5, Problem 14.5.1SR

Interpretation Introduction

Interpretation:

The standard free energy change ${\text{(ΔG}}_{\text{rxn}}{}^{\text{°}}\text{)}$ in the given reaction has to be calculated.

Concept introduction:

Free energy(Gibbs free energy) is the term that is used to explain the total energy content in a thermodynamic system that can be converted into work.  The free energy is represented by the letter $\text{G}$.  All spontaneous process is associated with the decrease of free energy in the system.  The standard free energy change ${\text{(ΔG}}^{\text{°}}{}_{\text{rxn}})$ is the difference in free energy of the reactants and products in their standard state.

${\text{ΔG}}^{\text{°}}{}_{\text{rxn}}\text{=}\sum {\text{nΔG}}_{\text{f}}{}^{\text{°}}\text{(Products)-}\sum {\text{nΔG}}_{\text{f}}{}^{\text{°}}\text{(Reactants)}$

Where $\text{'n'}$ is the number of moles of products and reactants.