Match List I with List II List I (Amines) List II pKb A. Aniline I. 3 . 25 B. Ethanamine II. 3 . 00 C.…

Match List I with List II

List I (Amines) List II pKb
A. Aniline I. 3.25
B. Ethanamine II. 3.00
C. N-Ethylethanamine III. 9.38
D. N, N-Diethylethanamine IV. 3.29

Choose the correct answer from the options given below:-

  1. A-I, B-IV, C-II, D-III
  2. A-III, B-II, C-I, D-IV
  3. A-III, B-II, C-IV, D-I
  4. A-III, B-IV, C-II, D-I

Solution

Among given aliphatic amines, 2° amine is most basic, followed by 3° amine and 1° amine.

Therefore, the correct basic strength (Kb) order of the given amines is

(C) > (D) > (B) > (A)

The pKb order of the given amines will be just the opposite of their basic strength order.

The order is (A) > (B) > (D) > (C)

So the correct answer is A-III, B-IV, C-II, D-I

 

Asked in: JEE Main 2023 (25 Jan Shift 2)

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