Chapter 3, Problem 3C.3E

Interpretation Introduction

Interpretation:

The residual molar entropy of ${\text{FClO}}_{\text{3}}$ molecule has to be calculated.

Concept Information:

Residual entropy: The gas molecules are disordered in the solid, even at $\text{T}\text{=}0$, and there is a contribution to the entropy at $\text{T}\text{=}0$ from positional disorder that is frozen in. this contribution is called the residual entropy of a solid.

$\begin{array}{l}\text{S=}\text{k}\text{ln}{\text{W}}^{\text{N}}\\ \\ \text{S=}\text{Nk}\text{ln}\text{W}\\ \\ \text{For}\text{molar}\text{entropy}\text{as,}\\ \\ {\text{S}}_{\text{m}}\text{=}{\text{N}}_{\text{A}}\text{k}\text{ln}\text{W}\left(or\right)\text{R}\text{ln}\text{W}\end{array}$

Where,

N is the total number of ways of arranging N molecules.

R is the universal gas constant.