Which of the following cycloalkanes exhibits the greatest molar heat of combustion?
A) cyclooctane
B) cycloheptane
C) cyclohexane
D) cyclobutane
E) cyclopropane

Question

Quizplus · Accepted Answer

The molar heat of combustion of a cycloalkane increases with the number of carbon atoms in the ring. This is because the more carbon atoms there are, the more bonds there are to break, and the more energy is released. Cyclooctane has the most carbon atoms of the given cycloalkanes, so it will have the greatest molar heat of combustion.

Which of the Following Cycloalkanes Exhibits the Greatest Molar Heat