Question

the most reactive alkyl hallide towards SN2 reaction is
a)CH3X
b)R3CX
c)R2CHX
d)RCH2X​

Answer 1

Answer:

Explanation:

For SN2  reaction, for the Nucleophile to attack the compound should not be bulky. So more bulky the compound lesser the reactivity towards SN2.

 

.

Answer 2

Explanation:

The most reactive alkyl hallide towards SN2 reaction is

a) CH3X ✔

b) R3CX

c) R₂CHX

d) RCH₂X

Explaination -

CH3X is most reactive alkyl halide towards SN2 recation because the reaction between CH3X and hydroxide ion (OH-) to produce methanol is second order reaction.

In SN2 mechanism, the incoming nucleophile approaches the CH3X and starts interacting with it due to which the C-X bond starts breaking and a new C-OH bond start forming.

In SN2 reaction no intermediate product (IP) is formed. In SN2 reaction transition state is formed.

Reactivity order of SN2 reaction -

• CH3X > 1° > 2° > 3°