Fe-> Fe2O3->Fe (OH)3->Fe2 (SO4)3

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This series of reactions shows the transformation of iron (Fe) into various compounds:

Fe -> Fe2O3 (Iron oxide): Iron reacts with oxygen to form iron oxide.

Fe2O3 -> Fe (OH)3 (Iron hydroxide): Iron oxide reacts with water to form iron hydroxide.

Fe (OH)3 -> Fe2 (SO4)3 (Iron sulfate): Iron hydroxide reacts with sulfuric acid to form iron sulfate.

Overall, these reactions demonstrate the chemical reactivity of iron and its ability to form different compounds depending on the reactants present.