Name two gases which produce dense white fumes with rod dipped in ammonia solution.
Hydrochloric acid (HCl) and Chlorine (Cl2) gas produce dense white fumes with rod dipped in ammonia solution.
Reaction with Hydrochloric acid:
When a rod dipped in ammonia is brought near Hydrochloric acid, dense white fumes or smog of Ammonium chloride are produced.
Reaction with Chlorine gas:
This reaction occurs in two steps.
Hence, this reaction needs excess of ammonia.