\(4Al+3O_2-^{t^o}\rightarrow2Al_2O_3\\ Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3-^{t^o}\rightarrow Al_2O_3+3H_2O\\ Al_2O_3-^{đpnc,criolit}\rightarrow2Al+\dfrac{3}{2}O_2\\ 2Al+6HCl\rightarrow2AlCl_3+3H_2\)
\(Al\underrightarrow{1}Al_2O_3\underrightarrow{2}AlCl_3\underrightarrow{3}Al\left(OH\right)_3\underrightarrow{4}Al_2O_3\underrightarrow{5}Al\underrightarrow{6}AlCl_3\)
(1) \(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)
(2) \(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
(3) \(AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\)
(4) \(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
(5) \(2Al_2O_3\xrightarrow[criolit]{điện.phân.nóng.chảy}4Al+3O_2\)
(6) \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
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