Question

Order of rate of reaction with $AgN{O}_3$ or rate of $S_{N}1$ is:

• A. I>III>II
• B. II>III>I
• C. I>II>III
• D. III>I>II

Answer 1

The correct option is A I>III>II

Order of rate of reaction with $AgN{O}_3$ or rate of $S_{N}1$ is 1 > 3 > 2

$S{N}^1$ reaction prefer tertiary alkyl halide as it proceeds with formation of carbocation as an intermediate.

Here carbocation formed in the compound I will be more stable than the other compound as the compound I has pi electrons to stabilize it.