Chapter 18, Problem 18.49E

Interpretation Introduction

Interpretation:

The heat capacity of ${\text{H}}_{\text{2}}\text{S}$ at $298\text{K}$ and $1\text{bar}$ pressure is to be calculated.

Concept introduction:

The heat capacity for nonlinear polyatomic molecule is given by the formula,

$C_{\text{V}}=Nk\left[\frac{3}{2}+\frac{3}{2}+{\displaystyle \sum _{j=1}^{3N^{*}-6}{\left(\frac{{\theta }_j}{T}\right)}^2\cdot \frac{e^{-{\theta }_j/T}}{{\left(1-e^{-{\theta }_j/T}\right)}^2}}\right]$

Where,

• $N$ is the Avogadro number.

• $T$ is the temperature.

• $k$ is the Boltzmann constant.

• ${\theta }_j$ is the rotational temperature.