Question

Arrange the following as directed :

(a) Increasing order of basic strength :

Aniline, p - nitroaniline and p - toluidine.

(b) Decreasing order of basic strength in gas phase :

C₂H₅NH₂, (C₂H₅) ₂NH, (C₂H₅)₃N and NH₃.

(c) Increasing order of solubility in water : 

C₆H₅NH_2, (C₂H₅)₂NH, C₂H₅NH₂.

Answer 1

(a) p-nitroaniline < aniline < p-toluidine.

(b) (C₂H₅)₃N > (C₂H₅)₂NH > C₂H₅NH₂ > NH₃. 

(c) C₆H₅NH₂ < (C₂H₅)₂NH < C₂H₅NH₂