Draw the two chair conformers for each of the following and indicate which conformer is more stable:
a)cis-1-ethyl-3-methylcyclohexane
b)trans-1-ethyl-2-methylcyclohexane
c)trans-1-ethyl-2-isopropylcyclohex ane
d)cis-1,2-diethylcyclohexane
e)cis-1-ethyl-3-isopropylcyclohexan e
ecis-1-ethyl-4-isopropylcyclohexane

For the drawings, please refer to the attached picture.

Explanation:

Stability of the conformers depends on the location of the groups attached to the main ring. The position of the bulkier (bigger) groups plays the most important role in conformer’s stability. If the conformer contains the bulkier group in the equatorial position, that conformer will be more stable than his twin brother with the bulkier group in the axial position. These are also drawn and attached below.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

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