11. (24 pts) (a) Similar to alkanes, hydrogen gas can undergo radical bromination according to the reaction below. Propose a chain-reaction mechanism for this reaction, including an initiation step, propagation steps, and two plausible termination steps. The homolytic bond dissociation energy for Br-Br is 46 kcal mole", for H-Br is 88 kcal-mole and for H-H is 104 kcal-mole. hv Н-Н + Br-Br 2 Н-Br (b) Calculate the overall AH for the above propagation steps (show all work).
11. (24 pts) (a) Similar to alkanes, hydrogen gas can undergo radical bromination according to the reaction below. Propose a chain-reaction mechanism for this reaction, including an initiation step, propagation steps, and two plausible termination steps. The homolytic bond dissociation energy for Br-Br is 46 kcal mole", for H-Br is 88 kcal-mole and for H-H is 104 kcal-mole. hv Н-Н + Br-Br 2 Н-Br (b) Calculate the overall AH for the above propagation steps (show all work).
Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter8: Haloalkanes, Halogenation, And Radical Reactions
Section: Chapter Questions
Problem 8.21P
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![11. (24 pts) (a) Similar to alkanes, hydrogen gas can undergo radical bromination according to the reaction
below. Propose a chain-reaction mechanism for this reaction, including an initiation step, propagation
steps, and two plausible termination steps. The homolytic bond dissociation energy for Br-Br is 46
kcal mole-, for H-Br is 88 kcal mole and for H-H is 104 kcal mole.
hv
Н-Н + Вr-Br
2 Н-Br
(b) Calculate the overall AH for the above propagation steps (show all work).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3005eaaf-cd4d-4b39-92de-265382accbde%2F78fde5bb-152c-40f9-8ec3-d1bed7e8bcb4%2F8k3ozjv_processed.jpeg&w=3840&q=75)
Transcribed Image Text:11. (24 pts) (a) Similar to alkanes, hydrogen gas can undergo radical bromination according to the reaction
below. Propose a chain-reaction mechanism for this reaction, including an initiation step, propagation
steps, and two plausible termination steps. The homolytic bond dissociation energy for Br-Br is 46
kcal mole-, for H-Br is 88 kcal mole and for H-H is 104 kcal mole.
hv
Н-Н + Вr-Br
2 Н-Br
(b) Calculate the overall AH for the above propagation steps (show all work).
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