Question

The correct order for basic strength of amines and ammonia is ______.

Options

• NH₃ > R - NH₂ > R₂NH > R₃N

• NH₃ > R₃N > R₂NH > R - NH₂

• NH₃ < R - NH₂ > R₃N > R₂NH

• NH₃ < R - NH₂ < R₂NH > R₃N

Answer 1

The correct order for basic strength of amines and ammonia is NH₃ < R - NH₂ < R₂NH > R₃N.

Explanation:

In aqueous solution, the basic strength of aliphatic amines follows the order:

Secondary amine > Primary amine > Tertiary amine > Ammonia.

This is due to the +I (electron-donating) effect of alkyl groups and better solvation of secondary amines.