The sign of change in entropy and change in enthalpy for the given reaction needs to be determined. Concept Introduction : Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

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Answer 1

Question

Chapter 20.3, Problem 20.6BFP

(a)

Interpretation Introduction

Interpretation: The sign of change in entropy and change in enthalpy for the given reaction needs to be determined.

Concept Introduction: Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

(b)

Interpretation Introduction

Interpretation: The value of T for change in Gibbs free energy to be less than 0 needs to be explained.

Concept Introduction: The change in Gibbs free energy ΔG , change in enthalpy ΔH , and change in entropy ΔS are related to each other as follows:

ΔG=ΔH−TΔS

Here, T is the absolute temperature.

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Answer 2

Question

Chapter 20.3, Problem 20.6BFP

(a)

Interpretation Introduction

Interpretation: The sign of change in entropy and change in enthalpy for the given reaction needs to be determined.

Concept Introduction: Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

(b)

Interpretation Introduction

Interpretation: The value of T for change in Gibbs free energy to be less than 0 needs to be explained.

Concept Introduction: The change in Gibbs free energy ΔG , change in enthalpy ΔH , and change in entropy ΔS are related to each other as follows:

ΔG=ΔH−TΔS

Here, T is the absolute temperature.

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Answer 3

Question

Chapter 20.3, Problem 20.6BFP

(a)

Interpretation Introduction

Interpretation: The sign of change in entropy and change in enthalpy for the given reaction needs to be determined.

Concept Introduction: Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

(b)

Interpretation Introduction

Interpretation: The value of T for change in Gibbs free energy to be less than 0 needs to be explained.

Concept Introduction: The change in Gibbs free energy ΔG , change in enthalpy ΔH , and change in entropy ΔS are related to each other as follows:

ΔG=ΔH−TΔS

Here, T is the absolute temperature.

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Answer 4

Question

Chapter 20.3, Problem 20.6BFP

(a)

Interpretation Introduction

Interpretation: The sign of change in entropy and change in enthalpy for the given reaction needs to be determined.

Concept Introduction: Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

(b)

Interpretation Introduction

Interpretation: The value of T for change in Gibbs free energy to be less than 0 needs to be explained.

Concept Introduction: The change in Gibbs free energy ΔG , change in enthalpy ΔH , and change in entropy ΔS are related to each other as follows:

ΔG=ΔH−TΔS

Here, T is the absolute temperature.

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Answer 5

Chapter 20.3, Problem 20.6BFP

(a)

Interpretation Introduction

Interpretation: The sign of change in entropy and change in enthalpy for the given reaction needs to be determined.

Concept Introduction: Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

(b)

Interpretation Introduction

Interpretation: The value of T for change in Gibbs free energy to be less than 0 needs to be explained.

Concept Introduction: The change in Gibbs free energy ΔG , change in enthalpy ΔH , and change in entropy ΔS are related to each other as follows:

ΔG=ΔH−TΔS

Here, T is the absolute temperature.

Answer 6

Chapter 20.3, Problem 20.6BFP

(a)

Interpretation Introduction

Interpretation: The sign of change in entropy and change in enthalpy for the given reaction needs to be determined.

Concept Introduction: Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

Answer 7

Chapter 20.3, Problem 20.6BFP

(a)

Interpretation Introduction

Interpretation: The sign of change in entropy and change in enthalpy for the given reaction needs to be determined.

Concept Introduction: Entropy of any substance is defined by its degree of randomness. It increases with the molecular weight of a substance and its complexity. If concentration and pressure increase, the entropy of the substance decreases. Also, it depends on the state of the substance, for example, solid substances have less entropy as compared to liquid and gaseous substances have maximum entropy. For substances in the same state, the substance with higher molecular weight has greater entropy.

Answer 8

(b)

Interpretation Introduction

Interpretation: The value of T for change in Gibbs free energy to be less than 0 needs to be explained.

Concept Introduction: The change in Gibbs free energy ΔG , change in enthalpy ΔH , and change in entropy ΔS are related to each other as follows:

ΔG=ΔH−TΔS

Here, T is the absolute temperature.

Answer 9

(b)

Interpretation Introduction

Interpretation: The value of T for change in Gibbs free energy to be less than 0 needs to be explained.

Concept Introduction: The change in Gibbs free energy ΔG , change in enthalpy ΔH , and change in entropy ΔS are related to each other as follows:

ΔG=ΔH−TΔS

Here, T is the absolute temperature.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 20.1 - Prob. 20.1AFP Ch. 20.1 - Prob. 20.1BFP Ch. 20.2 - Prob. 20.2AFP Ch. 20.2 - Prob. 20.2BFP Ch. 20.2 - Prob. 20.3AFP Ch. 20.2 - Prob. 20.3BFP Ch. 20.3 - Prob. 20.4AFP Ch. 20.3 - Prob. 20.4BFP Ch. 20.3 - Prob. 20.5AFP Ch. 20.3 - Prob. 20.5BFP

Solution Summary: The author analyzes the relationship between change in Gibbs free energy, change of enthalpy, and change for the given reaction.

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