\(\left(1\right)4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)
A
\(\left(2\right)Al_2O_3+2NaOH\rightarrow2NaAlO_2+H_2O\)
B
\(\left(3\right)2NaAlO_2+CO_2+3H_2O\rightarrow2Al\left(OH\right)_3+Na_2CO_3\)
D
\(\left(4\right)Al\left(OH\right)_3+NaOH\rightarrow NaAlO_2+2H_2O\)
\(\left(5\right)NaAlO_2+4HCl\rightarrow AlCl_3+NaCl+2H_2O\)
E
\(\left(6\right)AlCl_3+4KOH\rightarrow KAlO_2+3KCl+2H_2O\)
F
\(\left(7\right)2KAlO_2+4H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+K_2SO_4+4H_2O\)
G
\(\left(8\right)Al_2\left(SO_4\right)_3+3Ba\left(NO_3\right)_2\rightarrow3BaSO_4+2Al\left(NO_3\right)_3\)
H I
Kết tinh dung dịch I ta được \(2Al\left(NO_3\right)_3.nH_2O\)
\(\left(9\right)Al\left(NO_3\right)_3+3NH_3+3H_2O\rightarrow Al\left(OH\right)_3+3NH_4NO_3\)
\(\left(10\right)2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
\(\left(11\right)2Al_2O_3\xrightarrow[criolit]{đpnc}4Al+3O_2\)
