Question

H2O->H2->HCL->AlCl3->Al (OH)3->Al2(SO4)

Answer 1

2H2O =2 H2 + O2

H2 + Cl2 = 2HCl

6HCl + Al2O3 = 2AlCl3 + 3H2O

AlCl3 + 3NaOH = Al(OH)3 + 3NaCl

2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O