Question

Fe → FeCl2→ Fe(OH)2 → Fe(OH)3 → Fe2O3 →

→ Fe → FeCl3

Answer 1

1. Fe + 2HCl → FeCl₂ + H₂ ↑

2. FeCl₂ + 2NaOH → Fe(OH)₂ ↓ + 2NaCl

3. 4Fe(OH)₂ + O₂ + 2H₂O → 4Fe(OH)₃

4. 2Fe(OH)₃ → Fe₂O₃ + 3H₂O

5. Fe₂O₃ + 3H₂ → 2Fe + 3H₂O

6. 2Fe + 3Cl₂ → 2FeCl₃