Chapter 5, Problem 5.25NP

Interpretation Introduction

Interpretation: The value of $\Delta S_R^o$ for the given reaction needs to be determined.

Concept introduction:

For a reaction as follows:

  $A+B\to C$

The change in entropy can be calculated as follows:

  $\Delta S_R=\Delta S_C-\Delta S_A-\Delta S_B$

Also, at different temperatures, the change in entropy of a reaction is calculated as follows:

  $\Delta S_{R,T_2}^{°}=\Delta S_{R,T_1}^{°}+{\displaystyle \underset{T_1}{\overset{T_2}{\int }}\frac{\Delta C_P^o}{T}}dT$

Here, $\Delta C_P^o$ is heat capacity at constant pressure and T₁and T₂ are two temperature values.