1) 2Fe+3H₂SO₄ -> Fe₂(SO₄)₃ +3H₂O
2) Fe₂(SO₄)₃ + 6NaCl -> 2FeCl₃ +3Na₂(SO₄)
3) FeCl₃ +3HNO₃ -> Fe(NO₃)₃ + 3HCl
4) Fe(NO₃)₃ +3KOH -> Fe(OH)₃ + 3KNO₃
1) 2Fe+3H₂SO₄ -> Fe₂(SO₄)₃ +3H₂O
2) Fe₂(SO₄)₃ + 6NaCl -> 2FeCl₃ +3Na₂(SO₄)
3) FeCl₃ +3HNO₃ -> Fe(NO₃)₃ + 3HCl
4) Fe(NO₃)₃ +3KOH -> Fe(OH)₃ + 3KNO₃