Iron III carbonate, Fe2(CO3)3
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From Pisgahchemist: You might think that Fe3+ and CO3^2- ions might combine to make insoluble Fe2(CO3)3, but you would be wrong. Fe2(CO3)3 does not exist. It turns out that solutions of metal ions with higher oxidation states tend to be more acidic. Iron in the +3 oxidation state is too acidic to form the carbonate. You get CO2 gas instead.
Therefore, you can have FeCO3, which is iron(II) carbonate, but there can be no no Fe2(CO3)3.
Iron(III) Carbonate or less commonly Ferric Carbonate
iron carbonate
This formula is (CH3COO)3Fe.
The chemical formula for Fe3 combined with S2 is Fe2S3.
The formula is Fe3+.
•Biologic sequence •O2 > water •NO3- > ammonia •Fe3+ > Fe2+ •Mn4+ > Mn2+ •SO42- > H2S •CO32- > CH4
Fe3+(CH3COO-)3.6H2O
This fluoride is FeF3.
The chemical formula for Fe3 combined with S2 is Fe2S3.
Formula: Fe3+
The formula is Fe3+.
Fe3+
Fe3 + I = FeI3
•Biologic sequence •O2 > water •NO3- > ammonia •Fe3+ > Fe2+ •Mn4+ > Mn2+ •SO42- > H2S •CO32- > CH4
Formula: Fe3(PO4)2
Fe3(PO4)2
The chemical formula of ferrous phosphate is Fe3(PO4)2.
Fe3 N2Formula: Fe3N2
Fe3+(CH3COO-)3.6H2O
The chemical formula of iron(II) phosphate is Fe3(PO4)2.