Which of the following compound gives a black precipitate with ammonia solution?A. `AgCl`B. `HgCl_(2)`C. `CuSO_(4)`D. `Hg_(2)Cl_(2)`

Which of the following compound gives a black precipitate with ammonia

1.	Which of the following compound gives a black precipitate with ammonia solution?A. `AgCl`B. `HgCl_(2)`C. `CuSO_(4)`D. `Hg_(2)Cl_(2)`
Answer» Correct Answer - 4 Ammonia forms a grey precipitate withmercurous chloride: `Hg_(2)Cl_(2)+2NH_(4)OHrarrubrace(Hg+HgNH_(2)Cl)_("Grey")+NH_(4)Cl+2H_(2)O` it forms a white precipitate with mercuric chloride: `Hg_(2)Cl_(2)+2NH_(4)OHrarr underset("mercuric chloride")underset("Amido")(HgNH_(2)Cl)+NH_(4)Cl`

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Which of the following compound gives a black precipitate with ammonia solution?A. `AgCl`B. `HgCl_(2)`C. `CuSO_(4)`D. `Hg_(2)Cl_(2)`

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