Brown ppt. (A) dissolve in HNO3 gives (B) which gives white ppt. (C) with NH4OH. (C) on reaction wit — Qualitative and Quantitative Analysis Chemistry Question
Question
Brown ppt. (A) dissolve in HNO3 gives (B) which gives white ppt. (C) with NH4OH. (C) on reaction with HCl gives solution (D) which gives white turbidity on addition of water. What is (D)?
Answer: A
💡 Solution & Explanation
Bi2S3 + 8HNO3 (dil.) -hot-> 2Bi(NO3)3 + 3S + 2NO + 4H2O. Bi(NO3)3 + 3NH4OH -> Bi(OH)3(C) + 3NH4NO3. Bi(OH)3 + 3HCl -> BiCl3(D) + 3H2O. BiCl3 + H2O <=> BiOCl(white turbidity) + 2HCl
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