Question

Al-Al2O3-Ba(AlO2)-Al2(So4)3
1)4Аl-3O2-2Al2O3
2)?
3)?

Answer 1

2) Al2O3 + Ba(OH)2 -> Ba(Al02)2 +H2O
3) Ba(AlO2)2+ 4H2SO4 -> Al2(SO4)3 + BaSO4 +4 H2O