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Question: Answered & Verified by Expert
The increasing order of pKb for the following compounds will be :
ChemistryGeneral Organic ChemistryJEE MainJEE Main 2020 (07 Jan Shift 1)
Options:
  • A B<C<A
  • B A<B<C
  • C C<A<B
  • D B<A<C
Solution:
1134 Upvotes Verified Answer
The correct answer is: B<A<C
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 .

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