TS EAMCET · Chemistry · Haloalkanes and Haloarenes
Choose the correct decreasing order of reactivity of alkyl halides towards \(\mathrm{S}_{\mathrm{N}} 1\) reaction.
- A Primary halide \(>\) Secondary halide \(>\) Tertiary halide
- B Secondary halide \(>\) Tertiary halide \(>\) Primary halide
- C Tertiary halide \(>\) Secondary halide \(>\) Primary halide
- D Tertiary halide \(>\) Primary halide \(>\) Secondary halide
Answer & Solution
Correct Answer
(C) Tertiary halide \(>\) Secondary halide \(>\) Primary halide
Step-by-step Solution
Detailed explanation
The reactivity of alkyl halides towards nucleophilic \(\mathrm{S}_{\mathrm{N}} 1\) reaction depends on the stability of the intermediate carbocation formed in the first step. Thus, reactivity follows the order :\(3^{\circ}\) halide \(>2^{\circ}\) halide \(>1^{\circ}\) halide.
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