Question

The rate of reaction with $AgN{O}_3$ will be

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

Answer 1

The correct option is B

III > I > II

Rate $\alpha$ stability of carbocation

(I) is a position where the resulting carbocation is $3^{\circ }$. (II) and (III) are positions where $2^{\circ }$ carbocations are involved.

But the carbocation involving (III) is stabilized via resonance. Hence, rate of the reaction follows:

(III) > (I) > (II)