3FeCl3 + 3NaOH -> Fe(OH)3 + 3NaCl Х - Fe(OH)3
2Fe(OH)3 -> Fe2O3 + 3H2O
2Fe2O3 -> 4Fe + 3O2 Х2 - Fe
2Fe + 3Cl2 -> 2FeCl3 Х3-FeCl3
2FeCl3 -> 2Fe + Cl2
2Fe + 6H2SO4 -> Fe2(SO4)3 + 3SO2 + 6H2O
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3FeCl3 + 3NaOH -> Fe(OH)3 + 3NaCl Х - Fe(OH)3
2Fe(OH)3 -> Fe2O3 + 3H2O
2Fe2O3 -> 4Fe + 3O2 Х2 - Fe
2Fe + 3Cl2 -> 2FeCl3 Х3-FeCl3
2FeCl3 -> 2Fe + Cl2
2Fe + 6H2SO4 -> Fe2(SO4)3 + 3SO2 + 6H2O