Chapter 16, Problem 26QRT

(a)

Interpretation Introduction

Interpretation:

The substance between $\text{Ga}\left(\text{s}\right)$ and $\text{Ga}\left(l\right)$ which has greater standard molar entropy at $25°\text{C}$ temperature has to be predicted.  The reason for the corresponding answer has to be stated.

Concept Introduction:

The term entropy is used to represent the randomness in a system.  When a system moves from an ordered arrangement to a less order arrangement, then the entropy of the system increases.  The second law of thermodynamics state that “the entropy of the system either increases or remains the same.”

(b)

Interpretation Introduction

Interpretation:

The substance between ${\text{AsH}}_3\left(\text{g}\right)$ and $\text{Kr}\left(l\right)$ which has greater standard molar entropy at $25°\text{C}$ temperature has to be predicted.  The reason for the corresponding answer has to be stated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The substance between $\text{NaF}\left(\text{s}\right)$ and $\text{MgO}\left(\text{s}\right)$ which has greater standard molar entropy at $25°\text{C}$ temperature has to be predicted.  The reason for the corresponding answer has to be stated.

Concept Introduction:

Refer to part (a).