MHT CET 2024 Chemistry question

Identify the correct decreasing order of pKb values of compounds from following.

(1)Correct
(2)
(3)
(4)

Answer: (1)

Solution

A stronger base has a smaller (). In aqueous solution the basic strength of aliphatic amines follows (the +I effect of alkyl groups increases electron density on N, partly offset for each added group by reduced solvation of the conjugate acid and steric effects, so

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Question ID VK-095631