Fe + 2HCl -> FeCl₂ + H₂↑
2FeCl₂ + H₂O₂ + 2HCl -> 2FeCl₃ + 2H₂O
FeCl₃ + 3NaOH -> Fe(OH)₃↓ + 3NaCl
Fe(OH)₃ + 3HNO₃ -> Fe(NO₃)₃ + 3H₂O
Fe + 2HCl -> FeCl₂ + H₂↑
2FeCl₂ + H₂O₂ + 2HCl -> 2FeCl₃ + 2H₂O
FeCl₃ + 3NaOH -> Fe(OH)₃↓ + 3NaCl
Fe(OH)₃ + 3HNO₃ -> Fe(NO₃)₃ + 3H₂O