Сцепочкой al→alcl3→al(oh)3→al2o3→al2(so4)3→al(oh)3→alcl3

2Al + 6HCl -> 2AlCl3 + 3H2
AlCl3 + 3NaOH -> Al(OH)3 + 3NaCl
2Al(OH)3 -> Al2O3 + 3H2O
Al2O3 +3 H2SO4 -> Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6NaOH -> 2Al(OH)3 + 3Na2SO4
Al(OH)3 + 3HCl -> AlCl3 + 3H2O

2Al + 3Cl2 = 2AlCl3
AlCl3 + 3LiOH = Al(OH)3↓ + 3LiCl
2Al(OH)3 =t°=> Al2O3 + 3H2O
Al2O3 +3H2SO4 = Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6KOH = 2Al(OH)3↓ + 3K2SO4
Al(OH)3 + 3HCl = AlCl3 + 3H2O