The order of rate of hydrolysis of alkyl halides: 1°, 2°, 3° and CH3X by SN2 pathway is

Question

The order of rate of hydrolysis of alkyl halides: 1°, 2°, 3° and CH3X by SN2 pathway is (A) 1° > 2° > 3° > CH3X (B) CH3X > 3° > 2°> 1°  (C)  CH3X > 1° > 2° > 3°  (D) 3° > 2° > 1° > CH3X

Tardigrade Admin · Accepted Answer

Reactivity in SN2 reactions depends upon the steric hindrance. Since the steric hindrance increases in the order: CH3X > 1° > 2° > 3° °, therefore, reactivity in SN2 reactions decreases in the same order, i.e., option (c) is correct.

Q. The order of rate of hydrolysis of alkyl halides: $1^{\circ}, 2^{\circ}, 3^{\circ}$ and $C H_{3} X$ by $S_{N} 2$ pathway is

$1^{\circ} > 2^{\circ} > 3^{\circ} > C H_{3} X$

$C H_{3} X > 3^{\circ} > 2^{\circ} > 1^{\circ}$

$C H_{3} X > 1^{\circ} > 2^{\circ} > 3^{\circ}$

$3^{\circ} > 2^{\circ} > 1^{\circ} > C H_{3} X$

Reactivity in $S_{N} 2$ reactions depends upon the steric hindrance. Since the steric hindrance increases in the order: $C H_{3} X > 1^{\circ} > 2^{\circ} > 3^{\circ}$ °, therefore, reactivity in $S_{N} 2$ reactions decreases in the same order, i.e., option (c) is correct.

Q. The order of rate of hydrolysis of alkyl halides: 1∘,2∘,3∘ and CH3​X by SN​2 pathway is

1∘>2∘>3∘>CH3​X

CH3​X>3∘>2∘>1∘

CH3​X>1∘>2∘>3∘

3∘>2∘>1∘>CH3​X