An aqueous solution is prepared by dissolving a mixture containing ZnCl2, CdCl2 and CuCl2. Now H2S g — Qualitative and Quantitative Analysis Chemistry Question
Question
An aqueous solution is prepared by dissolving a mixture containing ZnCl2, CdCl2 and CuCl2. Now H2S gas is passed through the aqueous solution of salt to form precipitate.
Answer: A,B
💡 Solution & Explanation
Passing H2S into the aqueous chloride solution makes it acidic. Cu2+ and Cd2+ precipitate as CuS and CdS in acidic medium, while Zn2+ requires a basic medium to precipitate as ZnS.
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