Question

Which is most basic ? (a) C6H5NH2. (b) (C6H5)2NH. (c) CH3NH2. (d) (CH3)2NH

Answer 1

Aniline is the Least Basic

Explanation:

Aliphatic amines are more essential than sweet-smelling amines on the grounds that the basicity of amines is because of the nitrogen of the amine giving its lonepair of electrons.

• In sweet-smelling amines this solitary pair is in conjugation(delocalized) with the fragrant ring. While in aliphatic amine this doesn't occur and in this way the solitary pair is fit to be given.  

• The methyl bunch is electron discharging group(+I impact) and it will build the electron thickness on nitrogen and consequently its essential character increases.

• So essential amine is less fundamental than optional.  

So the request for basicity is

$C_6H_5NH_2$ <$(C_6H_5)_2NH_2$ < $CH_3NH_2$ < $(CH_3)_2NH_2$