Question

Write the observations and balanced equations for the following reactions:

Excess of ammonium hydroxide is added to a substance obtained by adding hydrochloric acid in silver nitrate solution.

Answer 1

Excess ammonium hydroxide is added to a substance obtained by adding hydrochloric acid in silver nitrate solution.

• A white precipitate is obtained by adding hydrochloric acid to a silver nitrate solution that dissolves in an excess of ammonium hydroxide.
• Silver chloride is obtained by adding hydrochloric acid to the silver nitrate solution.
• On adding an excess of ammonium chloride, white precipitate gets dissolved.

Balanced chemical equations:

$$\begin{gathered} {\mathrm{AgNO}}_3+\mathrm{HCl}\to \mathrm{AgCl}\downarrow +{\mathrm{HNO}}_3 \\ \mathrm{White}\mathrm{ppt} \\ \mathrm{AgCl}+2{\mathrm{NH}}_4\mathrm{OH}\to \left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]\mathrm{Cl}+2{\mathrm{H}}_2\mathrm{O} \\ \mathrm{Soluble}\mathrm{complex} \end{gathered}$$