Chapter 20.3, Problem 20.8AFP

Interpretation Introduction

Interpretation: The temperature above which the given reaction is not spontaneous needs to be identified.

  $4\text{NO}\left(g\right)\to {\text{N}}_{\text{2}}\text{O}\left(g\right)+{\text{N}}_{\text{2}}{\text{O}}_{\text{3}}\left(g\right)$

Concept Introduction: A reaction is said to be spontaneous when the value of change in Gibbs free energy is negative. The relation between the change in Gibbs free energy, enthalpy, and entropy at a given temperature is represented as follows:

  $\Delta G=\Delta H-T\Delta S$

Here, T is the absolute temperature.