1)Al→Al2(SO4)3→Al(OH)3→Al2O3→AlCl3
2Al+3H₂SO₄=Al₂(SO₄)₃+3H₂
Al₂(SO₄)₃+6NaOH=2Al(OH)₃+3Na₂SO₄
2Al(OH)₃+t°C=Al₂O₃+3H₂O
Al₂O₃+6HCI=2AlCl₃+3H₂O
2)Mg→MgCl2→Mg(OH)2→MgSO4→MgCO3→MgO
Mg+2HCI=MgCl₂+H₂O
MgCl₂+2NaOH=Mg(OH)₂+2NaCI
Mg(OH)₂+H₂SO₄=MgSO₄+2H₂O
MgSO₄+Na₂CO₃=MgCO₃+Na₂SO₄
MgCO₃+t°C=MgO+CO₂
3)Fe→FeCl2→Fe(OH)2→FeO→Fe→FeCl3→Fe(OH)3→Fe2O3→Fe
Fe+2HCI=FeCl₂+H₂
FeCl₂+2NaOH=Fe(OH)₂+2NaCI
Fe(OH)₂+t°C=FeO+H₂O
FeO+H₂=Fe+H₂O
2Fe+3CI₂=2FeCl₃
FeCl₃+3NaOH=Fe(OH)₃+3NaCI
2Fe(OH)₃+t°C=Fe₂O₃+3H₂O
2Fe₂O₃+3C=2Fe+3CO₂
1)Al→Al2(SO4)3→Al(OH)3→Al2O3→AlCl3
2Al+3H₂SO₄=Al₂(SO₄)₃+3H₂
Al₂(SO₄)₃+6NaOH=2Al(OH)₃+3Na₂SO₄
2Al(OH)₃+t°C=Al₂O₃+3H₂O
Al₂O₃+6HCI=2AlCl₃+3H₂O
2)Mg→MgCl2→Mg(OH)2→MgSO4→MgCO3→MgO
Mg+2HCI=MgCl₂+H₂O
MgCl₂+2NaOH=Mg(OH)₂+2NaCI
Mg(OH)₂+H₂SO₄=MgSO₄+2H₂O
MgSO₄+Na₂CO₃=MgCO₃+Na₂SO₄
MgCO₃+t°C=MgO+CO₂
3)Fe→FeCl2→Fe(OH)2→FeO→Fe→FeCl3→Fe(OH)3→Fe2O3→Fe
Fe+2HCI=FeCl₂+H₂
FeCl₂+2NaOH=Fe(OH)₂+2NaCI
Fe(OH)₂+t°C=FeO+H₂O
FeO+H₂=Fe+H₂O
2Fe+3CI₂=2FeCl₃
FeCl₃+3NaOH=Fe(OH)₃+3NaCI
2Fe(OH)₃+t°C=Fe₂O₃+3H₂O
2Fe₂O₃+3C=2Fe+3CO₂