Question

Which one of the amines has the highest boiling point?
A.Primary amine
B.Secondary amine
C.Tertiary amine
D.All of these

Answer 1

Hint: Amines are classified into primary, secondary, or tertiary relying upon whether one, two, or three of the hydrogen molecules of ammonia have been replaced by organic groups. Amines are very vital compounds of organic chemistry; now they are further divided into different categories such as primary amines, secondary amines, and tertiary amines all of which inhibit different properties.

Complete step by step solution: Amines are classified into primary, secondary, or tertiary relying upon whether one, two, or three of the hydrogen molecules of ammonia have been replaced by organic groups.
In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen particle with a lone pair. Amines are officially derivatives of ammonia, wherein at least one hydrogen atom has been replaced by a substituent, for example, an alkyl or aryl group.
Primary amines have higher Hydrogen holding than tertiary amines due to the steric hindrance of the bulky alkyl grouping. Amines have a greater inclination to frame hydrogen holding because of the presence of hydrogen and electronegative N atoms. The intermolecular holding increments and will require more energy to break the bonds. Generally, in primary amines, two hydrogens are available that structure hydrogen bond contrasted with tertiary amine thus it has a higher breaking point.

So, the correct answer for the above question is option A.

Note: Amines are compounds having nitrogen in them so they are considered in the category of hetro hydrocarbons. Also, the lone pair nitrogen atom also impacts most of the properties of amines.