1.

Which of the following isomers has the lowest heat of combustion?

A. cis-1,2-dimethylcyclohexane
B. trans-1,2-dimethylcyclohexane
C. cis-1,3-dimethylcyclohexane
D. trans-1,3-dimethylcyclohexane
Answer» D. trans-1,3-dimethylcyclohexane


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