Q11 / 90 · JEE Main 2023 (25 Jan Shift 2) · Chemistry

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:-

  • A
    A-I, B-IV, C-II, D-III
  • B
    A-III, B-II, C-I, D-IV
  • C
    A-III, B-II, C-IV, D-I
  • Correct answer
    D
    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.

FigureTherefore, 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

 

Hence, the correct answer is option: 'D'.

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