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Which of the following precipitate is so...

Which of the following precipitate is soluble in excess of `NH_(3)` solution?

A

`Pb(OH)_(2)`

B

`Fe(OH)_(2)`

C

`Ni(OH)_(2)`

D

`Ag_(2)S`

Text Solution

Verified by Experts

The correct Answer is:
C
The green ppt. of `Ni(OH)_(2)` is soluble in excess of `NH_(3) ` solution
`underset("Green ppt.")(NI(OH)_(2)darr)+6NH_(3) to underset("Deep blue")([Ni(NH_(3))_(6)]^(2+)+2OH^(-)`
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