A Sample Contains Ba₃(PO₄)₂, CdS, AgCl, NH₄Cl, and ZnS

question 132

Multiple Choice

A sample contains Ba₃(PO₄) ₂, CdS, AgCl, NH₄Cl, and ZnS. Identify the precipitate after the addition of 6 mol L^-1 HCl; H₂S and 0.2 mol L^-1 HCl; OH^- to a pH of 8; and (NH₄) ₂HPO₄ with NH₃.

• A) Ba₃(PO₄)₂
• B) CdS
• C) AgCl
• D) NH₄Cl
• E) ZnS