Aryl Halides and Phenols - Result Question 1

2. Increasing rate of $S _N 1$ reaction in the following compounds is

(2019 Main, 10 April I)

(a) (A) $<$ (B) $<$ (C) $<$ (D)

(b) (B) $<$ (A) $<$ (C) $<$ (D)

(c) (A) $<$ (B) $<$ (D) $<$ (C)

(d) (B) $<$ (A) $<$ (D) $<$ (C)

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Answer:

Correct Answer: 2. (b)

Solution:

More stable the carbocation intermediate, higher will be the rate of $S _N 1$ reaction.

The reaction involving carbocation intermediate formation for the given compounds are as follows:<img

<img src=“https://temp-public-img-folder.s3.amazonaws.com/sathee.prutor.images/sathee_image/cropped_2024_01_16_b4fdca9f34924034e8d8g-443_jpg_height_279_width_752_top_left_y_2340_top_left_x_290.jpg"width="400">

<img src=“https://temp-public-img-folder.s3.amazonaws.com/sathee.prutor.images/sathee_image/cropped_2024_01_16_b4fdca9f34924034e8d8g-443_jpg_height_319_width_740_top_left_y_891_top_left_x_1234.jpg"width="400">