Organic Chemistry: Structure and Function
Organic Chemistry: Structure and Function
8th Edition
ISBN: 9781319079451
Author: K. Peter C. Vollhardt, Neil E. Schore
Publisher: W. H. Freeman
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Chapter 3, Problem 19P

(a)

Interpretation Introduction

Interpretation: The value of ΔH° involved in formation of HF 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

(b)

Interpretation Introduction

Interpretation: The value of ΔH° involved in the formation of HCl 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

(c)

Interpretation Introduction

Interpretation: The value of ΔH° involved in formation of HBr 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

(d)

Interpretation Introduction

Interpretation: The value of ΔH° involved in formation of HI 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

(e)

Interpretation Introduction

Interpretation: The value of ΔH° involved in formation of (CH3)CF and HF 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

(f)

Interpretation Introduction

Interpretation: The value of ΔH° involved in formation of (CH3)CCl and HCl 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

(g)

Interpretation Introduction

Interpretation: The value of ΔH° involved in formation of (CH3)CBr and HBr 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

(h)

Interpretation Introduction

Interpretation: The value of ΔH° involved in formation of (CH3)CI and HI 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 then the system gains energy while when work is negative then the system loses energy. Heat is not a state function and therefore change in enthalpy of reaction (ΔH°rxn) has been introduced. The formula to calculate ΔH° from bond dissociation of reactants and products is as follows:

  ΔH°=Sum of DH° of bonds brokenSum of DH° of bonds formed

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