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![](https://rs.olm.vn/images/avt/0.png?1311)
\(1.Al+4HNO_3\rightarrow Al\left(NO_3\right)_3+NO\uparrow+2H_2O\)
\(2.4Al\left(NO_3\right)_3\underrightarrow{t^0}2Al_2O_3+12NO\uparrow+3O_2\)
\(3.2Al_2O_3\underrightarrow{đpnc}4Al+3O_2\)
\(4.2Al+Ba\left(OH\right)_2+2H_2O\rightarrow Ba\left(AlO_2\right)_2+3H_2\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2Al+3O_2\underrightarrow{^{^{t^o}}}2Al_2O_3\)
\(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
\(Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)
\(AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\)
\(2Al\left(OH\right)_3\underrightarrow{^{^{t^o}}}Al_2O_3+3H_2O\)
\(2NaOH+Al_2O_3\rightarrow2NaAlO_2+H_2O\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(4Al+3O_2\underrightarrow{^{^{t^0}}}2Al_2O_3\)
\(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
\(AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\)
\(2Al\left(OH\right)_3^{ }\underrightarrow{^{^{t^0}}}Al_2O_3+3H_2O\)
\(2Al_2O_3\underrightarrow{^{^{đpnc}}}4Al+3O_2\)
\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a)
\(Al+\dfrac{3}{2}Cl_2\rightarrow AlCl_3\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\\ Al_2O_3\xrightarrow[criolic]{đpnc}2Al+\dfrac{3}{2}O_2\)
b)
\(Fe+\dfrac{3}{2}Cl_2\rightarrow FeCl_3\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\\ 2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\\ Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a.
2Al2O3 \(\underrightarrow{t^o}\)4Al + 3O2\(\uparrow\)
Al + 6HNO3 \(\rightarrow\) Al(NO3)3\(\downarrow\) + 3NO2 + 3H2O
Al(NO3)3 + NaOH \(\rightarrow\) Al(OH)3\(\downarrow\) + NaNO3
2Al(OH)3 \(\xrightarrow[criolit]{đpnc}\) Al2O3 + 3H2O
Al2O3 + 3H2SO4 \(\rightarrow\) Al2(SO4)3 + 3H2O
Al2(SO4)3 + 3BaCl2 \(\rightarrow\) 3BaSO4\(\downarrow\) + 2AlCl3
2AlCl3 \(\xrightarrow[criolit]{đpnc}\) 2Al + 3Cl2\(\uparrow\)
2Al + 3CuSO4 \(\rightarrow\) 3Cu + Al2(SO4)3
![](https://rs.olm.vn/images/avt/0.png?1311)
(1) \(4Al+3O_2\xrightarrow[]{t^\circ}2Al_2O_3\)
(2) \(Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\)
(3) \(AlCl_3+3AgNO_3\rightarrow Al\left(NO_3\right)_3+3AgCl\downarrow\)
(4) \(Al\left(NO_3\right)_3+3LiOH\rightarrow Al\left(OH\right)_3\downarrow+3LiNO_3\)
(5) \(2Al\left(OH\right)_3\xrightarrow[]{t^\circ}Al_2O_3+3H_2O\uparrow\)
(6) \(Al_2O_3+2NaOH\rightarrow2NaAlO_2+H_2O\)
![](https://rs.olm.vn/images/avt/0.png?1311)
4Al+3O2--->2Al2O3
Al2O3+6HCl---->2Alcl3+3H2O
AlCl3+3NaOH--->3NaCl+Al(OH)3
2Al(OH)3--->Al2O3+3H2O
Al2O3+3H2--->2Al+3H2O
4Al + 3O2 → 2Al2O3
Al2O3 + 6HNO3 → 2Al(NO3)3 + 3H2O
Al(NO3)3 + 3NaOH → Al(OH)3 + 3NaNO3
Al2O3 + 6HCl → 2AlCl3 + 3H2O
(Điện phân trong dung dịch criolit (Na3AlF6))
Chúc bạn học tốt! Thân ái!
a)
+ 4Al + 3O2 =(nhiệt)=> 2Al2O3
+ Al2O3 + 6HNO3 ===> 2Al(NO3)3 + 3H2O
+ Al(NO3)3 + 3NaOH ===> 3NaNO3 + Al(OH)3
+ 2Al(OH)3 =(nhiệt)=> Al2O3 + 3H2O
+ Al2O3 + 6HCl ===> 2AlCl3 + 3H2O
+ 2AlCl3 =(điện phân nóng chảy)=> 2Al + 3Cl2