Question

Give reasons:

Conc. H₂SO₄ is a good drying agent, yet it is not used to dry NH_3.

Answer 1

Conc. H₂SO₄ is not used to dry ammonia, as ammonia, being basic, reacts with Conc. H₂SO₄.

\[\ce{2NH3 + H2SO4 -> \underset{(Ammonium sulphate)}{(NH4)2SO4}}\]