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The barrier to C-C bond rotation in ethanol (CH3-CH2-OH) is 14 kJ/mol. What energy can you assign to an H-O eclipsing interaction? Use strain energy increments from the table below in your calculation. (Specify units, kJ/mol; Calculate to nearest 0.1 energy units) Energy cost Interaction HH eclipsed H→ CH3 eclipsed Cause (kJ/mol) (kcal/mol) Torsional strain 4.0 1.0 Mostly torsional strain 6.0 1.4 CH3 -> CH3 eclipsed Torsional and steric strain 11.0 2.6 - CH3 CH3 gauche Steric strain 3.8 0.9

The barrier to C-C bond rotation in ethanol (CH3-CH2-OH) is 14 kJ/mol. What energy can you assign to an H-O eclipsing interaction? Use strain energy increments from the table below in your calculation. (Specify units, kJ/mol; Calculate to nearest 0.1 energy units) Energy cost Interaction HH eclipsed H→ CH3 eclipsed Cause (kJ/mol) (kcal/mol) Torsional strain 4.0 1.0 Mostly torsional strain 6.0 1.4 CH3 -> CH3 eclipsed Torsional and steric strain 11.0 2.6 - CH3 CH3 gauche Steric strain 3.8 0.9

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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The barrier to C-C bond rotation in ethanol (CH3-CH2-OH) is 14 kJ/mol. What energy can you assign to an H-O eclipsing interaction? Use strain energy increments from the table below in your calculation. (Specify units, kJ/mol; Calculate to nearest 0.1 energy units) Energy cost Interaction HH eclipsed H→ CH3 eclipsed Cause (kJ/mol) (kcal/mol) Torsional strain 4.0 1.0 Mostly torsional strain 6.0 1.4 CH3 -> CH3 eclipsed Torsional and steric strain 11.0 2.6 - CH3 CH3 gauche Steric strain 3.8 0.9
Transcribed Image Text:The barrier to C-C bond rotation in ethanol (CH3-CH2-OH) is 14 kJ/mol. What energy can you assign to an H-O eclipsing interaction? Use strain energy increments from the table below in your calculation. (Specify units, kJ/mol; Calculate to nearest 0.1 energy units) Energy cost Interaction HH eclipsed H→ CH3 eclipsed Cause (kJ/mol) (kcal/mol) Torsional strain 4.0 1.0 Mostly torsional strain 6.0 1.4 CH3 -> CH3 eclipsed Torsional and steric strain 11.0 2.6 - CH3 CH3 gauche Steric strain 3.8 0.9
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