The increasing order of the rate of HCN addition to compounds A-D is: (A) HCHO (B) CH3COCH3 (C) PhCOCH3 (D) PhCOPh

Question

The increasing order of the rate of HCN addition to compounds A-D is: (A) HCHO (B) CH3COCH3 (C) PhCOCH3 (D) PhCOPh (A) A < B < C < D (B) D < B < C < A (C) D < C < B < A (D) C < D < B < A

Tardigrade Admin · Accepted Answer

Addition of HCN is nucleophilic addition. Greater the electron deficiency of carbonyl group higher the rate of reaction. Hence,

Q. The increasing order of the rate of $H CN$ addition to compounds $A - D$ is :
(A) $H C H O$
(B) $C H_{3} COC H_{3}$
(C) $P h COC H_{3}$
(D) $P h COP h$

$A < B < C < D$

$D < B < C < A$

$D < C < B < A$

$C < D < B < A$

Addition of HCN is nucleophilic addition. Greater the electron deficiency of carbonyl group higher the rate of reaction.
Hence,

Q. The increasing order of the rate of HCN addition to compounds A−D is : (A) HCHO (B) CH3​COCH3​ (C) PhCOCH3​ (D) PhCOPh

A<B<C<D

D<B<C<A

D<C<B<A

C<D<B<A