Hydrocarbons Ques 63
63. Given:
The enthalpy of the hydrogenation of these compounds will be in the order as :

[2015]
(a) III $>$ II $>$ I
(b) II $>$ III $>$ I
(c) II $>$ I $>$ III
(d) I $>$ II $>$ III
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Answer:
Correct Answer: 63.(a)
Solution:
- (a) Enthalpy of hydrogenation
$ \propto \frac{1}{\text{ stability of alkene }} $
$ \therefore \quad \text{ III }>\text{ II }>\text{ I } $