Chapter 4, Problem 4.5CP

Interpretation Introduction

Interpretation:Thereason for the elements to be included in the sum in given equation are not included in the calculating $\Delta {\text{H}}_R^0$ at 298 K.

  ${\text{ΔC}}_{\text{P}}\text{(T') = }{\displaystyle \sum _i{\text{ν}}_{\text{i}}{\text{C}}_{\text{P}}{}_{\text{i}}\text{(T')}}$

Concept Introduction: The Gibb’s equation of thermodynamic purposed a relation between $\text{ΔS}$ , $\text{ΔH}$ and $\text{ΔG}$ with Temperature. 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:

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