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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 dilute `NaCl` solution and one formed a black precipitate with `H_(2)S`.The salt could be:

A

`AgNO_(3)`

B

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

C

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

D

`Mn(NO_(3))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`Pb(NO_(3))_(2)+2NH_(4)OHtoPb(OH)_(2)darr("white")+2NH_(4)NO_(3)`
`Pb(NO_(3))_(2)+2NaCl to PbCl_(2)darr("white")+2NaNO_(3)`
`Pb(NO_(3))_(2)+H_(2)S to PbS darr("black")+2NaNO_(3)`
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