\(3Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)
\(Al_2\left(SO_4\right)_3+3Cu\rightarrow3CuSO_4+2Al\)
\(4Al+3O_2\rightarrow2Al_2O_3\)
\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
\(AlCl_3+3H_2O\rightarrow Al\left(OH\right)_3+3HCl\)
\(2Al\left(OH\right)_3\rightarrow Al_2O_3+3H_2O\)
\(2Al_2O_3\rightarrow4Al+3O_2\)
\(2Al+3Cl_2\rightarrow2AlCl_3\)