Chapter 18, Problem 103AP

Interpretation Introduction

Interpretation:

The temperature at which the given reaction begins to favor the formation of the productis to be calculated.

Concept introduction:

The quantity that predicts the spontaneity of a process is called the Gibbs free energy. The mathematical equation is as follows:

$\Delta G^{\circ }=\Delta H^{\circ }-T\Delta S^{\circ }$

Here, $\Delta G^{\circ }$ is the change in standard Gibbs free energy, $\Delta H^{\circ }$ is the standard enthalpy change of a system, and $\Delta S^{\circ }$ is the standard entropy change of the system.

Entropy is a thermodynamic function. Entropy is the measure of randomness or disorderness of the system. The unit of entropy is $\text{J/K}\text{.mol}$.

The reaction is spontaneous if $\Delta G^{\circ }$ is negative.