Which is the correct order for the rate of su | vedclass

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(A) The sulphonation of benzene is a reversible reaction where the rate-determining step involves the cleavage of the $C-H$ (or $C-D$ or $C-T$) bond.S

Vedclass · Accepted Answer

$K_{C_6H_6} > K_{C_6D_6} > K_{C_6T_6}$

Vedclass · Answer

(A) The sulphonation of benzene is a reversible reaction where the rate-determining step involves the cleavage of the $C-H$ (or $C-D$ or $C-T$) bond.Since the $C-T$ bond is stronger than the $C-D$ bond,which in turn is stronger than the $C-H$ bond due to the kinetic isotope effect,the rate of reaction decreases as the mass of the isotope increases.Therefore,the correct order of the rate of sulphonation is $K_{C_6H_6} > K_{C_6D_6} > K_{C_6T_6}$.

Which is the correct order for the rate of sulphonation of benzene?

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