What is the correct decreasing order of boiling points for the isomeric amines: 1-Butanamine, Diethy — Amines Chemistry Question

💡 Solution & Explanation

Boiling point heavily depends on intermolecular hydrogen bonding. 1-Butanamine ($1^\circ$) has two $N-H$ bonds for extensive H-bonding. Diethylamine ($2^\circ$) has one $N-H$ bond. Ethyldimethylamine ($3^\circ$) lacks $N-H$ bonds entirely. Therefore, $1^\circ > 2^\circ > 3^\circ$.