Chapter 18, Problem 11SAQ

Interpretation Introduction

Introduction: The relation between standard free energy change $\Delta G_{\text{rxn}}^{º}$ and equilibrium constant $K_{\text{p}}$ can be determined by the following equation:

$\Delta G_{}^{}=-RT\hspace{0.17em}ln\hspace{0.17em}{K}_{\text{p}}$

when $K<1,\text{ln\hspace{0.17em}}K$ is negative, and $\Delta G_{\text{rxn}}^{º}$ is positive. And, when $K>1,K$ is positive, and $\Delta G_{\text{rxn}}^{º}$ is negative.