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To a solution of a substance, gradual ad...

To a solution of a substance, gradual addition of ammonium hydroxide results in a brownish black precipitate which does not dissolve in excess of `NH_(4)OH`.However, when `Kl` (not in excess) is added to the original solution, a green precipitate is formed. The solution contained :

A

Lead salt

B

Silver salt

C

Mercurous salt

D

Copper salt.

Text Solution

Verified by Experts

The correct Answer is:
C

`Hg_(2)^(2+) + 2l^(-) to Hg_(2)l_(2)darr` (green)
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