To write the propagation steps of HCI to propene with ∆H° and find out the step that prohibits chain propagation from repeatedly occurring. Concept introduction: Bond dissociation energies is very important in calculating the ∆H o for the two propagation steps in the chlorination of ethane. When the overall ∆H o is negative, the reaction is exothermic and if positive the reaction is endothermic. Moreover, because the transition state for the first propagation step is higher in energy than the transition state for the second propagation step, the first step is rate determining

Question

Hydrogen cyanide can be catalytically reduced with hydro-gen to form methylamine. Use Lewis structures and bond ener-gies to determine ΔH°ᵣₓₙ for HCN(g)+2H₂(g)→CH₃NH₂(g)

Answer 1

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 15, Problem 15.60P

Interpretation Introduction

Interpretation:

To write the propagation steps of HCI to propene with ∆H° and find out the step that prohibits chain propagation from repeatedly occurring.

Concept introduction:

Bond dissociation energies is very important in calculating the ∆H^o for the two propagation steps in the chlorination of ethane. When the overall ∆H^o is negative, the reaction is exothermic and if positive the reaction is endothermic. Moreover, because the transition state for the first propagation step is higher in energy than the transition state for the second propagation step, the first step is rate determining

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Answer 2

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 15, Problem 15.60P

Interpretation Introduction

Interpretation:

To write the propagation steps of HCI to propene with ∆H° and find out the step that prohibits chain propagation from repeatedly occurring.

Concept introduction:

Bond dissociation energies is very important in calculating the ∆H^o for the two propagation steps in the chlorination of ethane. When the overall ∆H^o is negative, the reaction is exothermic and if positive the reaction is endothermic. Moreover, because the transition state for the first propagation step is higher in energy than the transition state for the second propagation step, the first step is rate determining

Expert Solution & Answer

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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 15, Problem 15.60P

Interpretation Introduction

Interpretation:

To write the propagation steps of HCI to propene with ∆H° and find out the step that prohibits chain propagation from repeatedly occurring.

Concept introduction:

Bond dissociation energies is very important in calculating the ∆H^o for the two propagation steps in the chlorination of ethane. When the overall ∆H^o is negative, the reaction is exothermic and if positive the reaction is endothermic. Moreover, because the transition state for the first propagation step is higher in energy than the transition state for the second propagation step, the first step is rate determining

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

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 15, Problem 15.60P

Interpretation Introduction