Chapter 21, Problem 49QAP

Interpretation Introduction

Interpretation:

To determine the below reaction is spontaneousor not at $25°\text{C and 1 atm}$ and to find out lowest tempaerture at which nature of reaction is spontaneous.

$2{\text{KIO}}_{\text{3}}\left(\text{s}\right)+{\text{Cl}}_{\text{2}}\left(\text{g}\right)\to 2{\text{KClO}}_3\left(\text{s}\right)+{\text{I}}_{\text{2}}\left(\text{s}\right)$

Concept introduction:

Gibbs Helmholtz Equation states the relation between $\Delta G$, $\Delta H$ and $\Delta S$.

$\Delta G=\Delta H-T\Delta S$

Where, $\Delta G$ is Gibbs free energy, $\Delta H$ is enthalpy and $\Delta S$ is entropy.