question_answer

The basicity of the cyclohexylamine is more than that of aniline because of

A)  resonance

B)  hyper conjugation effect

C)  \[+R\text{-}\]effect of \[-N{{H}_{2}}\]group

D)  \[-R\text{-}\]effect of \[-N{{H}_{2}}\] group

Correct Answer: C

Solution :

                \[-N{{H}_{2}}\] has \[+R\]-effect, it donates electrons to the benzene ring. As a result, the lone pair of electrons on the N-atom get delocalised over the benzene ring and less available for protonation. Thats why cyclohexylamine is more basic than aniline.