Chapter 20.4, Problem 20.9BFP

Interpretation Introduction

Interpretation: The change in standard Gibbs free energy of the reaction needs to be calculated at 298 K using the given equilibrium constant value.

  $\text{2HCl}\left(\text{g}\right)+{\text{Br}}_{\text{2}}\left(l\right)\rightleftharpoons 2\text{HBr}\left(g\right)+{\text{Cl}}_2\left(g\right)$

Concept Introduction:

The relation between change in standard Gibbs free energy of reaction and equilibrium constant is as follows:

  $\Delta G^o=RT\ln K$

Here, R is the universal gas constant and T is temperature.