Question

Al- Al2O3- Al2(SO4)3- Al (OH)3- AlCL3

Answer 1

1) 4Al + 3O2 = 2Al2O3
2) Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O
3) Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4
4) Al(OH)3 + 3HCl = AlCl3 + 3H2O