Question

Arrange the following in increasing order of their basic strength :

Answer 1

Reason:-

The -CH₃ group will increase the electron density on the benzene ring because of its +I effect, while the NO₂ group will decrease the electron density on the benzene ring because of its ‒I effect. Hence, the C₆H₅-NH₂ molecule having -CH₃ group will be more basic than C₆H₅-NH₂. Also, it will be more basic than the C₆H₅-NH₂ molecule with the NO₂ group.