Question

АІ → АІ2О3 → АІСІ3 → АІ(ОН)3 → NaAlO2

Answer 1

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

Answer 2

4Al+3O₂=2Al₂O₃
Al₂O₃+6HCl=2AlCl₃+3H₂O
AlCl₃+3NaOH=3NaCl+Al(OH)₃↓
Al(OH)₃+NaOH=NaAlO₂+2H₂O (сплав)