Question

Fe → FeCl3 → Fe(OH)3 → Fe2O3 → Fe2(SO4)3

Answer 1

2Fe+3Cl₂=2FeCl₃
FeCl₃+3NaOH=Fe(OH)₃↓+3NaCl
2Fe(OH)₃=t=Fe₂O₃↓+3H₂O↑
Fe₂O₃+3SO₃=Fe₂(SO₄)₃

Answer 2

2Fe + 3Cl₂ = 2FeCl₃.
FeCl₃ + 3NaOH = Fe(OH)₃↓ + 3NaCl.
2Fe(OH)₃ t° → Fe₂O₃ + 3H₂O.
Fe₂O₃ + 3H₂SO₄ = Fe₂(SO₄)₃ + 3H₂O.