Compare the rate of catalytic hydrogenation u | vedclass

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(A) The rate of catalytic hydrogenation depends on the accessibility of the double bond to the catalyst surface. In compound $(a)$,the bulky $-CH_3$ g

Vedclass · Accepted Answer

$a > b$

Vedclass · Answer

(A) The rate of catalytic hydrogenation depends on the accessibility of the double bond to the catalyst surface. In compound $(a)$,the bulky $-CH_3$ group is oriented away from the double bond,resulting in less steric hindrance for the approach of $H_2$ on the catalyst surface. In compound $(b)$,the $-CH_3$ group is oriented towards the double bond,creating significant steric hindrance. Therefore,the rate of reaction for $(a)$ is greater than that for $(b)$,i.e.,$a > b$.

Compare the rate of catalytic hydrogenation using $H_2 / Pt$ for the following compounds $(a)$ and $(b)$:

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