The precipitate obtained by the interaction of solutions of iron (III) sulfate and barium nitrate was filtered off. The filtrate was treated with an excess of sodium hydroxide. The formed precipitate was separated and calcined. The resulting material was treated with an excess of hydrochloric acid solution. Write the equations for the described reactions.
Fe2(SO4)3 + 3Ba(NO3)2 → 3BaSO4↓ + 2Fe(NO3)3
Fe(NO3)3 + 3NaOH → Fe(OH)3↓ + 3NaNO3
2Fe(OH)3 → Fe2O3 + 3H2O
Fe2O3 + 6HCl → 2FeCl3 + 3H2O
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