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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
a) 2Fe+3Cl2--->2FeCl3
FeCl3+3NaOH--->3NaCl+Fe(OH)3
3Fe(OH)3-->Fe2O3+3H2O
Fe2O3+H2---->2Fe+3H2O
Fe+H2SO4---->FeSO4+H2
FeSO4+BaCl2---->FeCl2+BaSO4
b) Fe+2HCl--->FeCl2+H2
FeCl2+AgNO3--->2AgCl+Fe(NO3)2
Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2
Fe(OH)2+Na2SO4--->2NaOH+FeSO4
FeSO4+Zn----->ZnSO4+Fe
Fe+.....Ko biết
c)4 Al+3O2--->2Al2O3
Al2O3+3H2SO4--->Al2(SO4)3+3H2O
Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2
Alcl3+3NaOH--->Al(OH)3+3NaCl
2Al(OH)3--->Al2O3+3H2O
2Al2O3--->4Al+3O2
a) 2Fe+3Cl2--->2FeCl3
FeCl3+3NaOH--->3NaCl+Fe(OH)3
3Fe(OH)3-->Fe2O3+3H2O
Fe2O3+H2---->2Fe+3H2O
Fe+H2SO4---->FeSO4+H2
FeSO4+BaCl2---->FeCl2+BaSO4
b) Fe+2HCl--->FeCl2+H2
FeCl2+AgNO3--->2AgCl+Fe(NO3)2
Fe(NO3)2+2NaOH--->2NaNO3+Fe(OH)2
Fe(OH)2+Na2SO4--->2NaOH+FeSO4
FeSO4+Zn----->ZnSO4+Fe
ko có PTHH
c)4 Al+3O2--->2Al2O3
Al2O3+3H2SO4--->Al2(SO4)3+3H2O
Al2(SO4)3+3BaCl2---->2AlCl3+3BaCl2
Alcl3+3NaOH--->Al(OH)3+3NaCl
2Al(OH)3--->Al2O3+3H2O
2Al2O3--->4Al+3O2
a.
(1) 4Al + 3O2 ---> 2Al2O3
(2) \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)
(3)\(Al_2\left(SO_4\right)_3+6NaOH\rightarrow2Al\left(OH\right)_3\downarrow+3Na_2SO_4\)
(4)\(2Al\left(OH\right)_3\underrightarrow{t^o}Al_2O_3+3H_2O\)
a, 4Al + 3O2 -> 2Al2O3
Al2O3 + 3H2SO4 -> Al2(SO4)3 + 3H2O
Al2(SO4)3 + 6NaOH -> 2Al(OH)3 + 3Na2SO4
2Al(OH)3 nhiệt độ lên Al2O3 + 3H2O
b, 4Fe + 3O2 -> 2Fe2O3
Fe2O3 + 3H2SO4 -> Fe2(SO4)3 + 3H2O
Fe2(SO4)3 + KOH -> Fe(OH)3
Fe(OH)3 nhiệt độ lên Fe2O3 + h20
Fe2O3 + 6HCl -> 2FeCl3 + 3H2o
4Al + 3O2 → 2Al2O3
Al2O3 + 6HNO3 → 2Al(NO3)3 + 3H2O
Al(NO3)3 + 3NaOH → Al(OH)3 + 3NaNO3
| 2Al(OH)3 | → | Al2O3 | + | 3H2O |
Al2O3 + 6HCl → 2AlCl3 + 3H2O
| 2AlCl3 | → | 2Al | + | 3Cl2 |
(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
a) S +O2(1)-> SO2
(2)2SO2+O2-> 2SO3
(3)SO3+H2O---> H2SO4
(4)H2SO4+2NaOH-> Na2SO4+2H2O
(5)Na2SO4+BaCl2----> BaSO4+2NaCl
b) 2Fe +3Cl2---->2FeCl3
(2)FeCl3+3NaOH-> Fe(OH)3 +3NaCl
(3)2Fe(OH)3----> Fe2O3+3H2O
(4)Fe2O3+3H2SO4--> Fe2(SO4)3+3H2O
(5)Fe2(SO4)3+6NaCl-> 2FeCL3+3Na2SO4
c) Fe +2HCl--> FeCl2+H2
(2)FeCl2+2AgNO3-> Fe(NO3)2 +2AgCl
(3)Fe(NO3)2+2NaOH----> Fe(OH)2 +2NaNO3
(4)Fe(OH)2+MgSO4---> FeSO4+Mg(OH)2
d) 4Al+3o2 ----> 2Al2O3
(2)Al2O3+3H2SO4---> Al2(SO4)3 +3H2O
(3)Al2(SO4)3+3BaCl2-> 2AlCl3 +3BaSO4
(4)AlCl3+3AgNO3----> Al(NO3)3 +3AgCl
(5)Al(NO3)3+3NaOH-> Al(OH)3 +3NaNO3
(6)2Al(OH)3-----> Al2O3+3H2O
e) 4Na +O2-> 2Na2O
(2)Na2O+H2O-> 2NaOH
(3)2NaOH+H2SO4-> Na2SO4+2H2O
(4)Na2SO4+BaCl2-> 2NaCl+BaSO4
(5)NaCl+AgNO3---> NaNO3+AgCl
bạn tự cân bằng nhé chứ ko lâu lắm
a) \(S+O_2-to>SO_2\)
\(SO_2+O_2-\frac{to}{xt}>SO_3\)
\(SO_3+H_2O->H_2SO_4\)
\(NaOH+H_2SO_4->Na_2SO_4+H_2O\)
\(BaCl_2+Na_2SO_4->BaSO_4+NaCl\)
\(Al+2HCl->AlCl_2+H_2\)
\(AlCl_2+3NaOH->Al\left(OH\right)_3+3NaCl\)
Làm gì có \(AlCl_2\)?