Chapter 20.4, Problem 20.9AFP

Interpretation Introduction

Interpretation: The value of the equilibrium constant, K for the given reaction needs to be calculated at 298 K.

  $\text{2C}\left(\text{graphite}\right)+{\text{O}}_{\text{2}}\left(g\right)\to 2\text{CO}\left(g\right)$

Concept Introduction:

The change in standard Gibbs free energy of a reaction can be calculated using the change in Gibbs free energy of formation of reactant and products from the thermodynamic table (at 298 K).

The formula used is as follows:

  $\Delta G_{\text{reaction}}={\displaystyle \sum \Delta G_{\text{product}}}-{\displaystyle \sum \Delta G_{\text{reactant}}}$

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.