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A sulphide ore (A) on roasting leaves a ...

A sulphide ore `(A)` on roasting leaves a residue `(B)`. `(B)` on heating with chlorine gives `(C )`, sulphide in water, addition of excess potassium iodide to a solution of `(C )` gives a solution `(D)` A brown precipitate `(E)` is formed when a solution of ammonium sulphate is added to an alkaline a solution of `(D)`. Identify `(A)` to `(E)`.

Text Solution

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`underset((A))(HgS)overset("Roasting")(to)underset((B))(HgO)overset(Cl_(2))(to)underset((C))(HgCl_(2))overset("Excess of Kl")(to)underset((D))(K_(2)Hgl_(4))underset((NH_(4))_(2)SO_(4))overset("Alkaline")(to)underset("Brown ppt"(E))(HgO.Hg(NH_(2))l)`
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