Hoàn thành dãy chuyển hóa Al2O3->Al->AlCl3->MgCl2->Mg(OH)2-MgO->MgCl2 Al->Al_2(SO4)_3->Al(OH)3->Al_2(SO4)_3 Al_2(SO4)_3->AlCl3

Đáp án:

$2Al_2O_3 \xrightarrow{đpnc,criolit} 4Al + 3O_2$

`2Al + 3Cl_2 \to 2AlCl_3`

`3Mg + 2AlCl_3 \to 3MgCl_2 + 2Al`

`MgCl_2 + 2KOH \to 2KCl + Mg(OH)_2`

$Mg(OH)_2 \xrightarrow{t^0} MgO + H_2O$

`MgO + 2HCl \to MgCl_2 + H_2O`

`2Al + 3H_2SO_4 \to Al_2(SO_4)_3 + 3H_2`

`Al_2(SO_4)_3 + 6KOH \to 3K_2SO_4 + 2Al(OH)_3`

`2Al(OH)_3 + 3H_2SO_4 \to Al_2(SO_4)_3 + 6H_2O`

`Al_2(SO_4)_3 + 3BaCl_2 \to 3BaSO_4 + 2AlCl_3`