Question

Which of the following alkyl halide is hydrolysed by SN1 mechanism? (a) CH3Br (b) (CH3)3C-Br (c) CH3-CH2-Br (d) CH3-CH2-CH2-Br​

Answer 1

Answer:

Explanation:

(CH)  

3

​  

CCl

Answer 2

$(CH_3)_3CBr$ can be hydrolyzed by the SN1 mechanism.

• The SN1 reaction is a substitution nucleophilic unimolecular.
• In this reaction, in the first step, the Br atom is removed and produces carbonation and in the second step, an external nucleophile attacks the carbonation and gives a product.
• The reactivity of alkyl halide towards SN1 reaction follows the order 3°>2°>1°.
• Hence $(CH_3)_3CBr$ can be hydrolyzed by the SN1 mechanism.
• Hence the correct option is b.