Al→al2o3→alcl3→al(no3)3→ al(oh)3→al2o3→al

4Al+3O₂=2Al₂O₃
Al₂O₃+6HCl=2AlCl₃+3H₂O
AlCl₃+3AgNO₃=Al(NO₃)₃+3AgCl↓
Al(NO₃)₃+3KOH=Al(OH)₃+3KNO₃
2Al(OH)₃→(t°)→Al₂O₃+3H₂O
2Al₂O₃+Na→(t°;CaF₂;ток)→4Al+3O₂↑

4Al + 3O2 = 2Al2O3
Al2O3 + 6HCl = 2AlCl3 + 3H2O
AlCl3 + 3NaOH = Al(OH)3(осадок) + 3NaCl