Observations seen when Ammonium hydroxide is treated with the salt solutions containing the following cations
|
Cation
present in the salt solution
|
Observation
when NH4OH is added in small quantity
|
Solubility of
the ppt. in excess NH4OH
|
|
Fe2+
|
Dirty
green ppt.
|
Insoluble
|
|
Fe3+
|
Reddish
brown ppt.
|
Insoluble
|
|
Pb2+
|
Chalky
white ppt.
|
Insoluble
|
|
Zn2+
|
Gelatinous
white ppt.
|
Soluble
|
|
Cu2+
|
Pale
blue ppt.
|
Soluble
|
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