Question

Which of the following is soluble in yellow ammonium sulphide?

• A. CuS
• B. CdS
• C. SnS
• D. PbS

Answer 1

Answer: (C)

The sulfides of $A{s}^{3+},A{s}^{5+},S{b}^{3+},S{b}^{5+},S{n}^{2+},S{n}^{4+}$ are soluble in yellow ammonium sulfide where they form polysulphide complexes.