The energy difference is kJ/mol. In the more stable chair: The isopropyl group i

Question

The energy difference is  kJ/mol.

In the more stable chair:

The isopropyl group is in the _________axialequatorialboth position.

The phenyl group is in the _________axialequatorialboth position.

Use the References to access important values if needed for this question. a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calculate the energy difference between the two chair conformations of the compound below. b. Specify substituent positions (axial or equatorial in the more stable chair. c. Estimate the percent of the more stable chair at equilibrium at 25 C. (To determine the percent of t he more stable chair at equilibrium. first calculate Keg, and then use this value to find the percentage.) CH CH Answers: a. he energy difference is kJ/mol b. In the more stable chair: o The isopropyl group is in the position. o The phenyl group is in the position c. At 25°C the equilibrium percent of the more stable chair conformation is approximately

Explanation / Answer

For he given molecule

a. The energy difference is 3.56 kJ/mol

b. In the most stable chair :

The isopropyl group is in the axial position

The phenyl group is in the equatorial position

c. At 25 oC, the equilibrium percent of the more stable chair conformation is approximately 80.83%

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