Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ? (R = alkyl substituent)

Question

Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ? (R = alkyl substituent) (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Stability of alkene propto (1/ text Heat of hydrogenation of alkene ) Greater the number of alkyl groups attached to the double bonded carbon atoms, more stable is the alkene. Hence, given alkene follow the following order of stability.

Q. Which one of the following alkenes will react faster with $H_{2}$ under catalytic hydrogenation conditions ?
( $R =$ alkyl substituent)

Stability of alkene
$\propto \frac{1}{Heat of hydrogenation of alkene}$
Greater the number of alkyl groups attached to the double bonded carbon atoms, more stable is the alkene. Hence, given alkene follow the following order of stability.

Q. Which one of the following alkenes will react faster with H2​ under catalytic hydrogenation conditions ? (R= alkyl substituent)

Stability of alkene ∝ Heat of hydrogenation of alkene 1​ Greater the number of alkyl groups attached to the double bonded carbon atoms, more stable is the alkene. Hence, given alkene follow the following order of stability.

Q. Which one of the following alkenes will react faster with $H_{2}$ under catalytic hydrogenation conditions ?
( $R =$ alkyl substituent)

Stability of alkene
$\propto \frac{1}{Heat of hydrogenation of alkene}$
Greater the number of alkyl groups attached to the double bonded carbon atoms, more stable is the alkene. Hence, given alkene follow the following order of stability.