Question

Arrange the following compounds in increasing order of their boiling point :

(CH₃)₂NH, CH₃CH₂NH₂, CH₃CН₂ОН

Answer 1

Higher boiling points are the outcome of stronger intermolecular H-bonding.

Since O-H bonds are more polar than N-H bonds, alcohol is more polar than amine.

Consequently, the boiling point's rising order is:

(CH₃)₂NH < CH₃CH₂NH₂ < CH₃CH₂OН