Chapter 18.5, Problem 4PE

(a)

Interpretation Introduction

Interpretation: The sign of the entropy change and the value of $\Delta S^{°}{}_{\text{rxn}}$, $\Delta H^{°}{}_{\text{rxn}}$ are to be calculated. The reaction is spontaneous or non spontaneous at $298\text{K}$ and $1\text{bar}$ pressure to be predicted.

Concept introduction: The spontaneity of the reaction depends upon enthalpy, Gibbs free energy and entropy of a reaction. The entropy of chemical reaction relies upon freedom of particles in reactants and products.

To determine: The sign of the entropy change for a given reaction.

(b)

Interpretation Introduction

To determine: The value of $\Delta S{°}_{\text{rxn}}$.

(c)

Interpretation Introduction

To determine: The value of $\Delta H^{°}{}_{\text{rxn}}$.

(d)

Interpretation Introduction

To determine: The reaction is spontaneous or non spontaneous at $298\text{K}$ and $1\text{bar}$ pressure.