Chapter 19, Problem 137A

Interpretation Introduction

Interpretation : The compound that has the higher entropy is to be identified.

Concept Introduction : Entropy is the amount of a system's thermal energy per unit temperature that cannot be used to carry out beneficial work.

Answer to Problem 137A

The compound that has the higher entropy is $\text{NaCl}\left(aq\right)$ .

Explanation of Solution

Entropy is a measure of a system's unpredictability or disorder, according to its definition.

The given pair is $\text{NaCl}\left(s\right)$ or $\text{NaCl}\left(aq\right)$ .

The compound that has higher entropy is $\text{NaCl}\left(aq\right)$ since there are greater number of possible position and more disordered.

Interpretation Introduction

Interpretation : The compound that has the higher entropy is to be identified.

Concept Introduction : Entropy is the amount of a system's thermal energy per unit temperature that cannot be used to carry out beneficial work.

Answer to Problem 137A

The compound that has the higher entropy is ${\text{CO}}_2\left(g\right)$ .

Explanation of Solution

Entropy is a measure of a system's unpredictability or disorder, according to its definition.

The given pair is ${\text{CO}}_2\left(s\right)$ or ${\text{CO}}_2\left(g\right)$ .

The compound that has higher entropy is ${\text{CO}}_2\left(g\right)$ since gases have high entropy and many disordered movements.

Interpretation Introduction

Interpretation : The compound that has the higher entropy is to be identified.

Concept Introduction : Entropy is the amount of a system's thermal energy per unit temperature that cannot be used to carry out beneficial work.

Answer to Problem 137A

The compound that has the higher entropy is hot water.

Explanation of Solution

Entropy is a measure of a system's unpredictability or disorder, according to its definition.

The given pair is hot water or cold water.

The compound that has higher entropy is hot water since heat is supplied.