Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

The increasing order of the pKb of the following compound is :

  1. A

    (B) < (D) < (A) < (C)

  2. B

    (A) < (C) < (D) < (B)

  3. C

    (B) < (D) < (C) < (A)

  4. D

    (C) < (A) < (D) < (B)

Solution

EWG attached to benzene ring will reduce the basic strength and increase pKb while EDG decreases pKb.

Correct order of pKb

(C) > (A) > (D) > (B)

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