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Question #1 The temperature-dependent ratio of isomers of 1,3-di-tert-butylcyclohexane has been examined at equilibrium (J. Am. Chem. Soc. 1960, 82, 2393). 1-Bu cis -Bu heat, Pd/C, sealed tube Temperature (K) 492.6 522.0 555.0 580.0 613.0 -Bu % trans 2.69 3.61 5.09 6.42 8.23 trans -Bu a) What is the equilibrium constant at 613.0 K? Show your work. b) What is the free energy difference (AG) at 613.0 K? Show your work. c) Using chair conformations, explain why the cis diastereomer is more stable than the trans.

Question #1 The temperature-dependent ratio of isomers of 1,3-di-tert-butylcyclohexane has been examined at equilibrium (J. Am. Chem. Soc. 1960, 82, 2393). 1-Bu cis -Bu heat, Pd/C, sealed tube Temperature (K) 492.6 522.0 555.0 580.0 613.0 -Bu % trans 2.69 3.61 5.09 6.42 8.23 trans -Bu a) What is the equilibrium constant at 613.0 K? Show your work. b) What is the free energy difference (AG) at 613.0 K? Show your work. c) Using chair conformations, explain why the cis diastereomer is more stable than the trans.

Chemistry
Chemistry
10th Edition
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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Question #1 The temperature-dependent ratio of isomers of 1,3-di-tert-butylcyclohexane has been examined at equilibrium (J. Am. Chem. Soc. 1960, 82, 2393). 1-Bu cis t-Bu heat, Pd/C, sealed tube Temperature (K) 492.6 522.0 555.0 580.0 613.0 t-Bu % trans 2.69 3.61 5.09 6.42 8.23 trans -Bu a) What is the equilibrium constant at 613.0 K? Show your work. b) What is the free energy difference (AG) at 613.0 K? Show your work. c) Using chair conformations, explain why the cis diastereomer is more stable than the trans.
Transcribed Image Text:Question #1 The temperature-dependent ratio of isomers of 1,3-di-tert-butylcyclohexane has been examined at equilibrium (J. Am. Chem. Soc. 1960, 82, 2393). 1-Bu cis t-Bu heat, Pd/C, sealed tube Temperature (K) 492.6 522.0 555.0 580.0 613.0 t-Bu % trans 2.69 3.61 5.09 6.42 8.23 trans -Bu a) What is the equilibrium constant at 613.0 K? Show your work. b) What is the free energy difference (AG) at 613.0 K? Show your work. c) Using chair conformations, explain why the cis diastereomer is more stable than the trans.
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