explain why pkb of methanamine is 3.38 while that of aniline is 9.38
Methanamine
In methane amine there is a ch3 group which is electron releasing and hence it increases the electron density on nitrogen making it more basic . And the stronger the base lesser is the pkb value thus pkb =3.38
Aniline
Benzene ring is electron withdrawing and decreases the electron density so it is a weak base. And the weaker the base more is the pkb value hence pkb=9.38
In methane amine there is a ch3 group which is electron releasing and hence it increases the electron density on nitrogen making it more basic . And the stronger the base lesser is the pkb value thus pkb =3.38
Aniline
Benzene ring is electron withdrawing and decreases the electron density so it is a weak base. And the weaker the base more is the pkb value hence pkb=9.38