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Alkenes on catalytic hydrogenation give ...

Alkenes on catalytic hydrogenation give alkanes. The reactions are exothermic. The heat of hydrogenation is a measure of stability of alkene. Lesser the heat of hydrogenation more stable the alkene.
The relative rate of catalytic hydrogenation of the following alkenes is

A

`IIgtIIIgtIVgtI`

B

`IgtIVgtIIIgtII`

C

`IIgtIVgtIgtIII`

D

`IIIgtIVgtIgtII`

Text Solution

Verified by Experts

The correct Answer is:
A
In general, the ease of reduction decreases in the order mono substituted `gt` 1, 1-disubstituted, 1,2-cis disubstituted, 1,2-trans-disubstituted `gt` trisubstituted `gt` tetra-substituted. Therefore, `IIgtIIIgtIVgtI`
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