Chemistry - Halogen Derivative Question with Solution | TestHub

Explanation:

The question asks about the factors that affect the rate of an ${\mathbf{S}}_{\mathbf{N}}$¹ reaction. Concept:

${\mathrm{S}}_{\mathrm{N}}1$ reactions proceed through a carbocation intermediate, so anything that stabilizes the carbocation increases the reaction rate.

Solution:

The rate of an SN¹ reaction ∝ stability of the carbocation .

Electron-donating groups (+I, +M) attached to the α-carbon help stabilize the carbocation and increase the SN¹ rate .