Write the reaction equation: Fe2O3 → FeCl3 → Fe (OH) 3 → Fe2O3 → Fe → FeCl2 → Fe (OH) 2 → FeCO3 → CO2

1. Iron oxide dissolves in hydrochloric acid to form chloride.
Fe2O3 + 6HCl = 2FeCl3 + 3H2O.
2. Reaction with alkali.
Fe (NO3) 3 + 3NaOH = 3NaNO3 + Fe (OH) 3.
3. Decomposition of iron hydroxide at 500-700 ° C.
2Fe (OH) 3 = Fe2O3 + 3H2O.
4. The reaction of exchange of iron oxide with aluminum.
Fe2O3 + Al = Al2O3 + Fe.
5. The reaction of iron with hydrochloric acid with the formation of iron (II) chloride.
Fe + 2HCl = H2 + FeCl2.
6. Getting iron (II) hydroxide.
FeCl2 + 2KOH = Fe (OH) 2 + KCl.
7. Obtaining carbonate in reaction with carbon dioxide.
Fe (OH) 2 + CO2 = FeCO3 + H2O.
8. Thermal decomposition, 500 ° C.
FeCO3 = FeO + CO2.