The value of Δ H ° involved in the formation of CH 3 X and HX should be calculated. Concept introduction: Thermodynamics is a study of energy transfers that can be done by either heat or work. The energy transferred through work involves force. When work is positive, the system gains energy,whereas, when work is negative, the system loses energy. Heat is not a state function, and therefore, change in enthalpy of reaction ( Δ H ° rxn ) has been introduced. The formula that Δ H ° from bond dissociation of reactants and products is as follows: Δ H ° = Sum of D H ° of bonds broken − Sum of D H ° of bonds formed

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Answer 1

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Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 3, Problem 41P

(a)

Interpretation Introduction

Interpretation: The value of ΔH° involved in the formation of CH3X and HX should be calculated.

Concept introduction:Thermodynamics is a study of energy transfers that can be done by either heat or work. The energy transferred through work involves force. When work is positive, the system gains energy,whereas, when work is negative, the system loses energy. Heat is not a state function, and therefore, change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula that ΔH° from bond dissociation of reactants and products is as follows:

ΔH°=Sum of DH° of bonds broken−Sum of DH° of bonds formed

(b)

Interpretation Introduction

Interpretation: The value of ΔH° obtained from these steps should be compared to values in table 3-5. Whether the alternative mechanism can compete with an accepted mechanism or not should be determined.

Concept introduction:Thermodynamics is a study of energy transfers that can be done by either heat or work. The energy transferred through work involves force. When work is positive,the system gains energy, whereas, when work is negative, the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula that ΔH° from bond dissociation of reactants and products is as follows:

ΔH°=Sum of DH° of bonds broken−Sum of DH° of bonds formed

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Answer 2

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Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 3, Problem 41P

(a)

Interpretation Introduction

Interpretation: The value of ΔH° involved in the formation of CH3X and HX should be calculated.

Concept introduction:Thermodynamics is a study of energy transfers that can be done by either heat or work. The energy transferred through work involves force. When work is positive, the system gains energy,whereas, when work is negative, the system loses energy. Heat is not a state function, and therefore, change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula that ΔH° from bond dissociation of reactants and products is as follows:

ΔH°=Sum of DH° of bonds broken−Sum of DH° of bonds formed

(b)

Interpretation Introduction

Interpretation: The value of ΔH° obtained from these steps should be compared to values in table 3-5. Whether the alternative mechanism can compete with an accepted mechanism or not should be determined.

Concept introduction:Thermodynamics is a study of energy transfers that can be done by either heat or work. The energy transferred through work involves force. When work is positive,the system gains energy, whereas, when work is negative, the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula that ΔH° from bond dissociation of reactants and products is as follows:

ΔH°=Sum of DH° of bonds broken−Sum of DH° of bonds formed

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Answer 3

Question

Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 3, Problem 41P

(a)

Interpretation Introduction

Interpretation: The value of ΔH° involved in the formation of CH3X and HX should be calculated.

Concept introduction:Thermodynamics is a study of energy transfers that can be done by either heat or work. The energy transferred through work involves force. When work is positive, the system gains energy,whereas, when work is negative, the system loses energy. Heat is not a state function, and therefore, change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula that ΔH° from bond dissociation of reactants and products is as follows:

ΔH°=Sum of DH° of bonds broken−Sum of DH° of bonds formed

(b)

Interpretation Introduction

Interpretation: The value of ΔH° obtained from these steps should be compared to values in table 3-5. Whether the alternative mechanism can compete with an accepted mechanism or not should be determined.

Concept introduction:Thermodynamics is a study of energy transfers that can be done by either heat or work. The energy transferred through work involves force. When work is positive,the system gains energy, whereas, when work is negative, the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula that ΔH° from bond dissociation of reactants and products is as follows:

ΔH°=Sum of DH° of bonds broken−Sum of DH° of bonds formed

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Check out a sample textbook solution

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Answer 4

Question

Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 3, Problem 41P

(a)

Interpretation Introduction