A certain compound (X) when treated with copper sulphate solution yiel – InterviewSolution

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1.	A certain compound (X) when treated with copper sulphate solution yields a brown precipitate. On adding hypo solution, the precipitate tums white. The compound is
Answer» `K_(2)CO_(3)` `KI` KBr `K_(3)PO_(4)` Solution :KI reacts with `CuSO_(4)` solution to produce CUPROUS iodide (white precipitate) and `I_(2)` (which GIVES brown colour). Iodine reacts with hypo `(Na_(2)S_(2)O.5H_(2)O)` solution. Decolourisaition of solution shows the APPEARANCE of white precipitate.

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