Chapter 6.6, Problem 13P

Interpretation Introduction

(a)

Interpretation: Whether the starting material or product is favored at equilibrium is to be predicted on the basis of the given value of $\text{Δ}H\text{°}$.

Concept introduction: The change in Gibbs free energy and enthalpy is represented by $\Delta \text{G}°$ and $\text{Δ}H\text{°}$ respectively. They both are state functions. The relation of $\Delta \text{G}°$ and $\text{Δ}H\text{°}$ is shown as,

$\text{Δ}G\text{°}=\text{Δ}H\text{°}-T\text{ΔS°}$

The change in Gibbs free energy describes the spontaneity of the reaction, whereas the change in enthalpy describes the relative bond strength in the substance.

Interpretation Introduction

(b)

Interpretation: The starting material or product which is favored at equilibrium is to be identified.

Concept introduction: The change in Gibbs free energy and enthalpy is represented by $\Delta \text{G}°$ and $\text{Δ}H\text{°}$ respectively. They both are state functions. The relation of $\Delta \text{G}°$ and $\text{Δ}H\text{°}$ is shown as,

$\text{Δ}G\text{°}=\text{Δ}H\text{°}-T\text{ΔS°}$

The change in Gibbs free energy describes the spontaneity of the reaction, whereas the change in enthalpy describes the relative bond strength in the substance.