, from –CH3 to –C2H5 results in change of the order
of basic strength Thus, there is a subtle interplay of the inductive
effect, solvation effect and steric hinderance of the alkyl group which
decides the basic strength of alkyl amines in the aqueous state The
order of basic strength in case of methyl substituted amines and ethyl
substituted amines in aqueous solution is as follows:
(C2H5)2NH > (C2H5)3N > C2H5NH2 > NH3
(CH3)2NH > CH3NH2 > (CH3)3N > NH3
(b) Arylamines versus ammonia
pKb value of aniline is quite high Why is it so