question_answer

Which of the following statements is not correct?

A)  Methylamine is more basic than \[\text{N}{{\text{H}}_{\text{3}}}\]

B)  Amines form hydrogen bonds

C)  Ethylamine has higher boiling point than propane

D)  Dimethylamine is less basic than methylamine

Correct Answer: D

Solution :

As the number of electron donating groups increases, basic character increases.

dimethylamine (two electron donating Me groups)

methylamine (one electron donating group)

Thus, dimethylamine is more basic than methyl amine. All other statements are correct. Note Trimethyl amine however contains three electron donating groups, yet it is less basic due to steric hindrance.