Asked by isuru thilanka on Sep 22, 2024
Verified
Which of the following cycloalkanes has the smallest heat of combustion per CH2 group?
A) cyclopropane
B) cyclobutane
C) cyclopentane
D) cyclohexane
E) cycloheptane
Heat of Combustion
The amount of heat released when a substance completely burns in oxygen, a measure of the energy content of a fuel.
Cycloalkanes
Saturated, ring-shaped hydrocarbons with the general formula CnH2n, where n is the number of carbon atoms in the ring.
- Elucidate the correlation between the molecular configuration and combustion enthalpy in cycloalkanes.
Verified Answer
BJ
Bradleigh Jones3 days ago
Final Answer :
D
Explanation :
Cyclohexane has the smallest heat of combustion per CH2 group because it adopts a chair conformation that is almost free of angle strain and torsional strain, making it the most stable among the options listed.
Learning Objectives
- Elucidate the correlation between the molecular configuration and combustion enthalpy in cycloalkanes.
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