Question

State your observation when a rod dipped in ammonium hydroxide solution is taken to the mouth of the jar filled with HCl. Write down the chemical equation for the same reaction.

Answer 1

When a glass rod dipped in ammonium hydroxide solution is brought near the mouth of a jar filled with HCl gas, dense white fumes of ammonium chloride are formed.

\[\ce{NH4OH + HCl -> NH4Cl + H2O}\]

The dense white fumes are due to the formation of ammonium chloride (NH₄Cl).