Добрый день.
1. Fe2O₃ + 3H₂ = 2Fe + 3H₂O
2. 2Fe + 3Cl₂ = 2FeCl₃
3. FeCl₃ + 3KOH = Fe(OH)₃ + 3KCl
4. Fe(OH)₃ + 3HNO₃ = Fe(NO₃)₃ + 3H₂O
5. 4Fe(NO₃)₃ = 2Fe₂O₃ + 12NO₂ + 3O₂
Fe₂O₃ + 2Al = 2Fe + Al₂O₃
6. 3Fe + 2O₂ = Fe₃O₄
7. Fe + 2HCl = FeCl₂ + H₂↑
8. FeCl₂ + 2NaOH= Fe(OH)₂+ 2NaCl