Answer:
A salt containing chloride ions or hydrochloric acid.
Explanation:
Hello,
In this case, by adding a chloride-based salt or hydrochloric acid, precipitation of silver chloride could be attained by cause of its neglectable solubility in water as shown below:
[tex]Ag^+(aq)+Cl^-(aq)\rightarrow AgCl(s)[/tex]
Moreover, barium chloride is highly soluble in water, for that reason it remains in aqueous solution as specified:
[tex]Ba^{2+}(aq)+2Cl^-(aq)\rightarrow BaCl_2(aq)[/tex]
[tex]BaCl_2(aq)\rightarrow Ba^{2+}(aq)+2Cl^-(aq)[/tex]
Best regards.
