Question

Name a chloride of a metal which is soluble in excess of ammonium hydroxide.

Answer 1

• Zinc chloride is soluble in excess of ammonium hydroxide.
• $$\begin{gathered} {\mathrm{ZnCl}}_2\left(\mathrm{s}\right)+2{\mathrm{NH}}_4\mathrm{OH}\left(\mathrm{aq}\right)\to \mathrm{Zn}{\left(\mathrm{OH}\right)}_2\left(\mathrm{aq}\right)\downarrow +2{\mathrm{NH}}_4\mathrm{Cl}\left(\mathrm{aq}\right) \\ \mathrm{Zinc}\mathrm{chloride}\mathrm{Ammonium}\mathrm{hydroxide}\mathrm{Zinc}\mathrm{hydroxide}\mathrm{Ammonium}\mathrm{chloride} \end{gathered}$$