Chapter 17, Problem 62E

Interpretation Introduction

Interpretation:

The reason for ${\text{ΔG}}_{\text{f}}^{\text{ο}}$ values of the hydrogen halides to become less negative and ${\text{ΔS}}_{\text{f}}^{\text{ο}}$ values to become more positive with increasing atomic number is to be stated.

Concept introduction:The term ${\text{ΔG}}_{\text{f}}^{\text{ο}}$ represent the standard change in free energy for a particular reaction. The relation between ${\text{ΔG}}_{\text{f}}^{\text{ο}}$ , ${\text{ΔS}}_{\text{f}}^{\text{ο}}$ and ${\text{ΔH}}_{\text{f}}^{\text{ο}}$ is,

${\text{ΔG}}_{\text{f}}^{\text{ο}}={\text{ΔH}}_{\text{f}}^{\text{ο}}-{\text{TΔS}}_{\text{f}}^{\text{ο}}$

To determine:The reason for ${\text{ΔG}}_{\text{f}}^{\text{ο}}$ values of the hydrogen halides to become less negative and ${\text{ΔS}}_{\text{f}}^{\text{ο}}$ values to become more positive with increasing atomic number.