Question

Which of the following is soluble in yellow ammonium sulphide?

• A. CuS
• B. CdS
• C. SnS
• D. PbS

Answer 1

Answer: (C)

SnS

Answer 2

The sulfides of $As ^{3+}, As ^{5+}, Sb ^{3+}, Sb ^{5+}, Sn ^{2+}, Sn ^{4+}$ are soluble in yellow ammonium sulfide where they form polysulphide complexes.