chem高手進

Firstly, Add some ammonia to Iron (II) sulphate and Iron(III) sulphate respectively

Then, for Iron (II) sulphate,
we can see some dirty green ppt. comes out.

And for Iron(III) sulphate,
we can see some brown ppt. comes out.

2007-04-26 23:12:51 補充：
Equation（未必正確）:Iron (II) sulphate:FeSO4 2NH4 2OH=FeOH2 (NH4)2SO4 Iron(III) sulphate:Fe2(SO4)3 6NH4 6OH=2FeOH3 3(NH4)2SO4

2007-04-26 23:14:32 補充：
Equation（未必正確）:Iron (II) sulphate:FeSO4＋2NH4＋2OH=FeOH2＋(NH4)2SO4Iron(III) sulphate:Fe2(SO4)3＋6NH4＋6OH=2FeOH3＋3(NH4)2SO4

By the colour of the solution......
Iron(II) sulphate is green in colour......
Iron(III) sulphate is yellow in colour......