The increasing order of p K b for the following compounds will be :

The increasing order of pKb for the following compounds will be :
  1. B<C<A
  2. A<B<C
  3. C<A<B
  4. B<A<C

Solution

Compound ‘’B’’ represents Guanidine, the conjugate acid of which is resonance stabilised. Compound "C" is aliphatic amine, here the ‘N’ is sp3 whereas in compound ''A" the ''N'' is sp2 .

Asked in: JEE Main 2020 (07 Jan Shift 1)

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