When reacts with

CHEMISTRY · Single correct · ISC · Chemistry · Equilibrium · d- and f-Block Elements

Problem

Hg2+\text{Hg}^{2+} when reacts with H2S\text{H}_2\text{S}, black ppt. (A) formed which when reacts with Na2S\text{Na}_2\text{S} followed by filtration leaving behind black ppt. (B). The filtrate with H+\text{H}^+ gives black ppt. (C). A, B and C are: (1) Hg2S,Hg,HgS\text{Hg}_2\text{S}, \text{Hg}, \text{HgS} (2) Hg+HgS,HgS,Hg\text{Hg} + \text{HgS}, \text{HgS}, \text{Hg} (3) Hg+HgS,Hg,HgS\text{Hg} + \text{HgS}, \text{Hg}, \text{HgS} (4) Hg2S,HgS,Hg\text{Hg}_2\text{S}, \text{HgS}, \text{Hg}

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