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onformation A (B) Consider the one-step conversion of A to B. Given that the reaction is endothermie by 5 keal'mol and that the energy difference between B and the transition state for the process is 15 kcal'mol, sketch a reaction-energy diagram for this reaction. Make sure to show how the given energy differences are consistent

onformation A (B) Consider the one-step conversion of A to B. Given that the reaction is endothermie by 5 keal'mol and that the energy difference between B and the transition state for the process is 15 kcal'mol, sketch a reaction-energy diagram for this reaction. Make sure to show how the given energy differences are consistent

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**2. A) Match the Newman projection for the conformation of 2-methylbutane to the indicated position on the potential energy diagram.** **Newman Projections:** - A: - CH₃ to the left, H up, H down on the front carbon. - H to the right, CH₃ up, H down on the back carbon. - B: - CH₃ to the left, H up, H down on the front carbon. - CH₃ to the right, H up, H down on the back carbon. - C: - H to the left, H up, CH₃ down on the front carbon. - CH₃ to the right, CH₃ up, H down on the back carbon. - D: - CH₃ to the left, CH₃ up, H down on the front carbon. - H to the right, H up, CH₃ down on the back carbon. **Conformation A = _________; B = _________; C = _________; D = _________** **Potential Energy Diagram Description:** - The graph shows energy plotted against dihedral angles (0°, 60°, 120°, 180°, 240°, 300°, 360°). - There are five maxima and minima: - I at 0° - II at 60° - III at 120° - IV at 180° - V at 240° **B) Consider the one-step conversion of A to B. Given that the reaction is endothermic by 5 kcal/mol and that the energy difference between B and the transition state for the process is 15 kcal/mol, sketch a reaction-energy diagram for this reaction. Make sure to show how the given energy differences are consistent with your sketch.** **Reaction-Energy Diagram Explanation:** - The diagram should indicate the initial energy level of A. - There should be an energy increase (endothermic reaction) from A to an intermediate state before reaching B. - The peak representing the transition state should be 15 kcal/mol higher than B. - The overall diagram should reflect an endothermic change of 5 kcal/mol from A to B.
Transcribed Image Text:**2. A) Match the Newman projection for the conformation of 2-methylbutane to the indicated position on the potential energy diagram.** **Newman Projections:** - A: - CH₃ to the left, H up, H down on the front carbon. - H to the right, CH₃ up, H down on the back carbon. - B: - CH₃ to the left, H up, H down on the front carbon. - CH₃ to the right, H up, H down on the back carbon. - C: - H to the left, H up, CH₃ down on the front carbon. - CH₃ to the right, CH₃ up, H down on the back carbon. - D: - CH₃ to the left, CH₃ up, H down on the front carbon. - H to the right, H up, CH₃ down on the back carbon. **Conformation A = _________; B = _________; C = _________; D = _________** **Potential Energy Diagram Description:** - The graph shows energy plotted against dihedral angles (0°, 60°, 120°, 180°, 240°, 300°, 360°). - There are five maxima and minima: - I at 0° - II at 60° - III at 120° - IV at 180° - V at 240° **B) Consider the one-step conversion of A to B. Given that the reaction is endothermic by 5 kcal/mol and that the energy difference between B and the transition state for the process is 15 kcal/mol, sketch a reaction-energy diagram for this reaction. Make sure to show how the given energy differences are consistent with your sketch.** **Reaction-Energy Diagram Explanation:** - The diagram should indicate the initial energy level of A. - There should be an energy increase (endothermic reaction) from A to an intermediate state before reaching B. - The peak representing the transition state should be 15 kcal/mol higher than B. - The overall diagram should reflect an endothermic change of 5 kcal/mol from A to B.
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