Write the reaction equations: Fe2O3- Ca (FeO2) 2- Fe2 (SO4) 3- Fe (NO3) 3- Fe (OH) 3- Fe2O3

1. Fe2O3 + Ca (OH) 2 = Ca (FeO2) 2 + H2O.

2. Ca (FeO2) 2 + 4H2SO4 = CaSO4 + Fe2 (SO4) 3 + 4H2O.

3. Fe2 (SO4) 3 + 3Ba (NO3) 2 = 2Fe (NO3) 3 + 3BaSO4 ↓.

4. Fe (NO3) 3 + 3NaOH = Fe (OH) 3 ↓ + 3NaNO3.

5.2Fe (OH) 3 (at temperature) = Fe2O3 + 3H2O.



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