Chapter 18, Problem 18.55SP

Interpretation Introduction

(a)

Interpretation:

The state that has greater entropy in terms of probability is to be identified and explained.

Concept introduction:

The third law of thermodynamics suggests that the entropy associated with a perfectly crystalline substance is zero.

The Boltzmann equation used to calculate entropy is as follows:

$S=k\ln W$

Where,

$k$ denotes Boltzmann’s constant.

$W$ denotes probability or ways that a specific arrangement can be achieved.

$S$ denotes entropy.

Interpretation Introduction

(b)

Interpretation:

Whether $\text{NaCl}$ at $0°\text{C}$ or $\text{NaCl}$ at $50°\text{C}$ has greater entropy in terms of probability is to be identified and explained.

Concept introduction:

The Boltzmann equation used to calculate entropy is as follows:

$S=k\ln W$

Where,

$k$ denotes Boltzmann’s constant.

$W$ denotes probability or ways that a specific arrangement can be achieved.

$S$ denotes entropy.