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Three separate samples of a solution of ...

Three separate samples of a solution of a single salt gave these results. One formed a white precipitate with excess ammonia solution, one formed a white precipitate with dil. NaCl solution and one formed a black precipitate with `H_(2)S`. The salt could

A

`AgNO_(3)` solution

B

`Pb(NO_(3))_(2)`

C

`Hg(NO_(3))_(2)`

D

`MnSO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B

`Pb(NO_(3))_(2) + 2NH_(4)OH to underset("White ppt")(Pb(OH)_(2)) + 2NH_(4)NO_(3)`
`Pb(NO_(3))_(2) + 2NaCl to underset("white ppt")(PbCl_(2)) + 2NaNO_(3)`
`Pb(NO_(3))_(2) + H_(2)S to underset("black ppt")(PbS) + 2HNO_(3)`
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