A = n-butyl bromide B = sec butyl bromide C = tert butyl bromide D = Iso butyl bromide order of reactivity towards ${SN}^{1}$ mech is

see full answer

Want to Fund your own JEE / NEET / Foundation preparation ??

Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*

An Intiative by Sri Chaitanya

C > D > B > A

C > B > A > D

A > D > B > C

C > B > D > A

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Rate of ${SN}^{1}$ reactivity $\propto$ stability of carbo cation

stability of carbocations $- 3^{o} > 2^{o} > 1^{o}$

stability of ${({CH}_{3})}_{2} CH \overset{+}{C} H_{2} > {CH}_{3} {CH}_{2} C H_{2} \overset{+}{C} H_{2}$ cannot be explained on the basis of H-conjugation. It can be explained on the basis of experimental facts & inductive effect

$S N^{1}$ reactivity ${(C H_{3})}_{3} C B r > C H_{3} C H B r C H_{2} C H_{3} > {(C H_{3})}_{2} C H C H_{2} B r > C H_{3} C H_{2} C H_{2} C H_{2} B r$