Chapter 13, Problem 89IAE

Interpretation Introduction

Interpretation:

The value of $\text{ΔrS°}$ for the given reaction at 298 K needs to be determined.

Concept introduction:

The Gibb’s equation of thermodynamic proposed a relation between $\text{ΔS}$, $\text{ΔH}$ and $\text{ΔG}$ with temperature. The mathematical expression of Gibb’s equation can be written as:

$\text{ΔG = ΔH - TΔS }$

With the help of this equation one can predict the change in $\text{ΔS}$, $\text{ΔH}$ and $\text{ΔG}$. For any reaction, the $\text{ΔH}$ and $\text{ΔS}$ can be calculated with the help of:

$\begin{array}{l}\text{ΔrS°= }\Sigma \text{ΔrS°product - }\sum \text{ΔrS°reactant}\\ \text{ΔrH°= }\Sigma \text{ΔrH°product - }\sum \text{ΔrH°reactant}\\ \text{ΔrG°= }\Sigma \text{ΔrG°product - }\sum \text{ΔrG°reac}\tan t\end{array}$