Chapter 4, Problem 4G.2AST

Interpretation Introduction

Interpretation:

An explanation regarding the observation that the entropy of $1\text{mol}$ ${\text{N}}_{\text{2}}\text{O}\left(\text{s}\right)$ at $T=0$ is $6\text{J}\cdot {\text{K}}^{-1}$ has to be stated.

Concept Introduction:

In statistical thermodynamics, entropy is defined as a measure of molecular randomness.  The value of entropy which is obtained with the help of Boltzmann formula is termed as the statistical entropy.  The Boltzmann formula is expressed as;

  $S=k\ln W$

In a sample, each and every arrangement of the molecules results in a distinct state which is called a microstate.  Therefore, the value of $W$ is equivalent to different microstates having the same energy.