2Fe + 3Cl₂ → 2FeCl₃
2FeCl₃ + 6NaOH → 2Fe(OH)₃ + 6NaCl
2Fe(OH)₃ → Fe₂O₃ + 3H₂O
Fe₂O₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂O
Fe₂(SO₄)₃ → 2Fe + 3SO₄
2Fe + 3Cl₂ → 2FeCl₃
2FeCl₃ + 6NaOH → 2Fe(OH)₃ + 6NaCl
2Fe(OH)₃ → Fe₂O₃ + 3H₂O
Fe₂O₃ + 3H₂SO₄ → Fe₂(SO₄)₃ + 3H₂O
Fe₂(SO₄)₃ → 2Fe + 3SO₄