Which one of the following alkenes will react | vedclass

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(A) The rate of catalytic hydrogenation of an alkene is inversely proportional to its stability. More substituted alkenes are more stable due to hyper

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(A) The rate of catalytic hydrogenation of an alkene is inversely proportional to its stability. More substituted alkenes are more stable due to hyperconjugation and inductive effects,and therefore,they react more slowly with $H_2$. The order of stability of alkenes is: Tetrasubstituted > Trisubstituted > Disubstituted > Monosubstituted > Ethene. Conversely,the order of reactivity towards catalytic hydrogenation is: Monosubstituted > Disubstituted > Trisubstituted > Tetrasubstituted. Among the given options,the alkene with the least number of substituents (monosubstituted or the least substituted one) will react fastest. Based on the provided structures,the alkene with the fewest $R$ groups (most $H$ atoms) will be the most reactive.

Which one of the following alkenes will react fastest with $H_2$ under catalytic hydrogenation condition?

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