Chapter 18, Problem 18.107SP

Interpretation Introduction

(a)

Interpretation:

The values of $\Delta G$ and $\Delta G°$ are to be compared for $Q$ less than 1.

Concept introduction:

Standard free-energy of substance formation use to define free-energy change for formation of $1\text{}\text{mol}$ of substance in its standard state. The reactant must be in its maximum stable form of constituent elements. It is denoted by $\Delta G{°}_{\text{f}}$. The general expression for $\Delta G{°}_{\text{f}}$ is as follows:

$\Delta G°=\Delta G{°}_{\text{f}}\left(\text{product}\right)-\Delta G{°}_{\text{f}}\left(\text{reactant}\right)$

Interpretation Introduction

(b)

Interpretation:

The values of $\Delta G$ and $\Delta G°$ are to be compared for $Q$ equal to 1.

Concept introduction:

Standard free-energy of substance formation use to define free-energy change for formation of $1\text{}\text{mol}$ of substance in its standard state. The reactant must be in its maximum stable form of constituent elements. It is denoted by $\Delta G{°}_{\text{f}}$. The general expression for $\Delta G{°}_{\text{f}}$ is as follows:

$\Delta G°=\Delta G{°}_{\text{f}}\left(\text{product}\right)-\Delta G{°}_{\text{f}}\left(\text{reactant}\right)$

Interpretation Introduction

(c)

Interpretation:

The values of $\Delta G$ and $\Delta G°$ are to be compared for $Q$ greater than 1.

Concept introduction:

Standard free-energy of substance formation use to define free-energy change for formation of $1\text{}\text{mol}$ of substance in its standard state. The reactant must be in its maximum stable form of constituent elements. It is denoted by $\Delta G{°}_{\text{f}}$. The general expression for $\Delta G{°}_{\text{f}}$ is as follows:

$\Delta G°=\Delta G{°}_{\text{f}}\left(\text{product}\right)-\Delta G{°}_{\text{f}}\left(\text{reactant}\right)$