Al^(3+),Fe^(3+),Zn^(2+) and Ni^(2+) ions...

`Al^(3+),Fe^(3+),Zn^(2+)` and `Ni^(2+)` ions are present in an acidic solution. Excess of ammonium chloride solution is added followed by addition of ammonium hydroxide solution. The available precipitate will contain

`Zn(OH)_(2)` and `Ni(OH)_(2)`

`Al(OH)_(3)` and `Fe(OH)_(3)`

`Zn(OH)_(2)` and `Al(OH)_(3)`

`Ni(OH)_(2)` and `Fe(OH_(3))`

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The correct Answer is:

As the concentration of `OH^(-)` ions is less due to common ion effect but enough to precipitate the `III^(rd)` group radicals as hydroxides, as the solubility product of III group hydroxides is lower than IV, V and VI group hydroxides.

`Al^(3+),Fe^(3+),Zn^(2+)` and `Ni^(2+)` ions are present in an acidic solution. Excess of ammonium chloride solution is added followed by addition of ammonium hydroxide solution. The available precipitate will contain

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