2. A reaction was found to proceed mechanistically in two steps. The following data was reported: Step 1: Ext = 35 kl/mol; AHº = +25 kJ/mol Step 2: Enct = 7 kJ/mol; AH° = -45 kJ/mol (a) Draw a potential energy diagram for the complete reaction. Identify the x and y axes, and label the diagram with the following: the transition states; the rate - determining step; the locations of the reactants, intermediates, and products of the reaction; the two Egct values; and the two AH° values given. (b) Calculate the overall AH° for the reaction from the graph, and label your diagram with it. (c) Are the first and second steps endothermic or exothermic? Justify your choices. (d) Are the transition states each for the first and second steps more product - like or more reactant - like? Justify your answers!

2. A reaction was found to proceed mechanistically in two steps. The following data was reported: Step 1: Ext = 35 kl/mol; AHº = +25 kJ/mol Step 2: Enct = 7 kJ/mol; AH° = -45 kJ/mol (a) Draw a potential energy diagram for the complete reaction. Identify the x and y axes, and label the diagram with the following: the transition states; the rate - determining step; the locations of the reactants, intermediates, and products of the reaction; the two Egct values; and the two AH° values given. (b) Calculate the overall AH° for the reaction from the graph, and label your diagram with it. (c) Are the first and second steps endothermic or exothermic? Justify your choices. (d) Are the transition states each for the first and second steps more product - like or more reactant - like? Justify your answers!

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter5: Stereochemistry At Tetrahedral Centers

Section5.SE: Something Extra

Problem 58AP: One of the steps in fat metabolism is the hydration of crotonate to yield 3-hydroxybutyrate. This...

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