Yellow Ammonium Sulphide (YAS) is used to separate the subgroups of Group II. Which of the following — Qualitative and Quantitative Analysis Chemistry Question
Question
Yellow Ammonium Sulphide (YAS) is used to separate the subgroups of Group II. Which of the following metal sulphides will dissolve in YAS?
Answer: D
💡 Solution & Explanation
Subgroup IIB sulphides ($As, Sb, Sn$) are amphoteric in nature and dissolve in Yellow Ammonium Sulphide to form soluble thio-complexes. Subgroup IIA ($Pb, Cu, Cd, Hg, Bi$) remains insoluble.
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