Which one of the following has the smallest h | vedclass

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(A) The heat of combustion of an isomer is inversely proportional to its thermodynamic stability. $A$ more stable isomer has a lower potential energy

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(A) The heat of combustion of an isomer is inversely proportional to its thermodynamic stability. $A$ more stable isomer has a lower potential energy and thus releases less energy upon combustion. In substituted cyclohexanes,the most stable isomer is the one that allows the largest substituents (like the tert-butyl group) to occupy the equatorial position to minimize $1,3-$diaxial interactions. The isomer where all bulky groups are in equatorial positions is the most stable and therefore has the smallest heat of combustion.

Which one of the following has the smallest heat of combustion?

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