Question

Al=>AlCl3=>Al(OH)3=>Al2O3=>Al2(SO4)3

Answer 1

2Al+3Cl2---2AlCl3
AlCl3+3NaOH---3NaCl+Al(OH)3
2Al(OH)3 (t)---- Al2O3+3H2O( не уверенна)
Al2O3+3H2SO4---Al2(SO4)3+3H2O