Question

i. Isobutylamine is an example of ............
a. 2º amine
b. 3° amine
c. 1° amine
d. quaternary ammonium salt.​

Answer 1

Isobutylamine is an example of  c. 1° amine.

1. Primary amine is characterized by directly attached alkyl or aryl group to the amine group.
2. The chemical formula of isobutylamine is CH3CH(CH3)CH2NH2.
3. In the isobutylamine, it is evident from structure that alkyl group, which is CH3CH(CH3)CH2, is attached to NH2 group. Thus it is primary amine.
4. The formula of sec-butyl amine which is secondary amine is - CH3CH(NH2)C2H5.
5. The formula of tert-butylamine which is tertiary amine is - (CH3)3CNH2.