Question

fe-fe(oh)3-fe2(so4)3-fe2o3-fe

Answer 1

1) Fe + 3NaOH → Fe(OH)₃ + 3Na;

2) 2Fe(OH)₃+3CuSO₄ → Fe₂(SO₄)₃+3Cu(OH)₂↓

3) Fe₂(SO₄)₃(t°) → Fe₂O₃+3SO3↑

4)Fe₂O₃+2Al → 2Fe+Al₂O₃