HgS is soluble in aqua regia forming $H g C l_{2}$ . What happens if Cu turnings are added to $H g C l_{2}$ ?

Hg is deposited on Cu

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Cu is deposited on Hg

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Both are correct

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Neither of them correct

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Solution

The correct option is A Hg is deposited on Cu
Mercuric chloride reacts with copper to form cupric chloride and mercury.
$H g C l_{2} + C u ⟶ C u C l_{2} + H g$ .
$H g$ is deposited on $C u$ .

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What is aqua regia? Give examples of metals that are soluble in aqua regia

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