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![](https://rs.olm.vn/images/avt/0.png?1311)
\(Na_2SO_4+BaCl_2\rightarrow2NaCl+BaSO_4\downarrow\\ 4Al+3O_2\rightarrow\left(t^o\right)2Al_2O_3\\ 2Zn+O_2\rightarrow\left(t^o\right)2ZnO\\ Mg+2HCl\rightarrow MgCl_2+H_2\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1) 2Fe + 2HCL ➝ 2FeCL + H2
2) 4AL + 3O2 ➝ 2AL2O3
3) 2KOH + H2SO4➝ K2SO4 + 2H2O
4) 2NaOH + CuSO4 ➝ Cu (OH)2 + Na2SO4
5) Zn + 2HCL ➝ ZnCL2 + H2
6) 3Fe + 2O2 ➝ Fe3O4
7) Mg + 2HCL ➝ MgCL2 + H2
8) 2NaOH + H2SO4 ➝ Na2SO4 + 2H2O
Chúc bn học tốt
1) 2Fe + 2HCL ➝ 2FeCL + H2
2) 4AL + 3O2 ➝ 2AL2O3
3) 2KOH + H2SO4➝ K2SO4 + 2H2O
4) 2NaOH + CuSO4 ➝ Cu (OH)2 + Na2SO4
5) Zn + 2HCL ➝ ZnCL2 + H2
6) 3Fe + 2O2 ➝ Fe3O4
7) Mg + 2HCL ➝ MgCL2 + H2
8) 2NaOH + H2SO4 ➝ Na2SO4 + 2H2O
![](https://rs.olm.vn/images/avt/0.png?1311)
1. CaO + 2HCl ---> CaCl2 + H2O (1 : 2 : 1 : 1)
2. 2Fe + 3Cl2 ---to---> 2FeCl3 (2 : 3 : 2)
3. Zn + 2HCl ---> ZnCl2 + H2 (1 : 2 : 1 : 1)
4. 3Ba(OH)2 + 2FeCl3 ---> 2Fe(OH)3 + 3BaCl2 (3 : 2 : 2 : 3)
5. 4Al + 3O2 ---to---> 2Al2O3 (4 : 3 : 2)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 6Fe + 4O2 ---> 2Fe3O44
b) 2Al + 3Cl2 ---> 2AlCl3
c) CuO + 2HCl ---> CuCl2 + H2O
d) BaCl2 + Na2SO4 ---> BaSO4 + 2NaCl
\(3Fe+2O_2\rightarrow Fe_3O_4\)
\(2Al+3Cl_2\rightarrow2AlCl_3\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(BaCl_2+Na_2SO_4\rightarrow BaSO_4+2NaCl\)
\(Ca\left(OH\right)_2+Na_2CO_3\rightarrow CaCO_3+2NaOH\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\)
\(2KClO_3\rightarrow2KCl+3O_2\)
\(P_2O_5+3H_2O\rightarrow2H_3PO_4\)
\(4P+5O_2\rightarrow2P_2O_5\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a,Mg+2HCl\to MgCl_2+H_2\\ b,2Fe+3Cl_2\xrightarrow{t^o}2FeCl_3\\ c,2NaOH+H_2SO_4\to Na_2SO_4+2H_2O\\ d,2Fe_xO_y+\dfrac{3x-2y}{2}O_2\xrightarrow{t^o}xFe_2O_3\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(1.2Fe+3Cl_2\overset{t^o}{--->}2FeCl_3\)
\(2.Zn+S\overset{t^o}{--->}ZnS\)
\(3.4P+5O_2\overset{t^o}{--->}2P_2O_5\)
\(4.Mg+2HCl--->MgCl_2+H_2\)
\(5.CO_2+H_2O--->H_2CO_3\)
\(6.K_2O+H_2O--->2KOH\)
\(7.4Na+O_2--->2Na_2O\)
\(8.Fe_2\left(SO_4\right)_3+3Ca\left(OH\right)_2--->2Fe\left(OH\right)_3\downarrow+3CaSO_4\)
\(9.Al_2O_3+3H_2SO_4--->Al_2\left(SO_4\right)_3+3H_2O\)
1) 2Fe+3Cl2 --to- > 2FeCl3
2)Zn+S --to- > ZnS
3) 4P+5O2 --to- > 2P2O5
4) Mg+ 3HCl ---> MgCl2 + H2
5)CO2+H2O --->H2CO3
6)K2O+H2O ----> 2KOH
7)4Na + O2 --to- > 2Na2O
8)Fe2(SO4)3 + 3Ca(OH)2 ----> 2Fe(OH)3+ 3CaSO4
9. Al2O3 + 3H2SO4 -----> Al2(SO4)3 + 3H2O
![](https://rs.olm.vn/images/avt/0.png?1311)
\(Ba\left(OH\right)_2+Na_2SO_4\rightarrow BaSO_4+2NaOH\)
\(C_2H_4+\dfrac{5}{2}O_2\underrightarrow{^{^{t^0}}}2CO_2+2H_2O\)
\(Fe+\dfrac{3}{2}Cl_2\underrightarrow{^{^{t^0}}}FeCl_3\)
\(Fe_xO_y+2yHCl\rightarrow xFeCl_{\dfrac{2y}{x}}+yH_2O\)
\(2Fe_xO_y+2yH_2SO_4\rightarrow xFe_2\left(SO_4\right)_{\dfrac{2y}{x}}+2yH_2O\)
Lập các PTHH của các phản ứng theo sơ đồ sau:
a) Ba(OH)2 + Na2SO4 --------> BaSO4 + 2NaOH
b) C2H4 + 3O2 ----to---> 2CO2 + 2H2O
c) 2Fe + 3Cl2 ------to------> 2FeCl3
h) FexOy + 2y HCl → x FeCl2y/x + y H2O
i) 2FexOy + 2y H2SO4 → x Fe2(SO4)2y/x + 2yH2O
\(1,K_2SO_4+Ba(NO_3)_2\to BaSO_4\downarrow+2KNO_3\\ 2,2Fe+3Cl_2\xrightarrow{t^o}2FeCl_3\\ 3,2Zn+O_2\xrightarrow{t^o}2ZnO\\ 4,Fe+2HCl\to FeCl_2+H_2\\ 5,Na_2SO_4+BaCl_2\to BaSO_4\downarrow+2NaCl\\ 6,4Al+3O_2\xrightarrow{t^o}2Al_2O_3\\ 7,2Cu+O_2\xrightarrow{t^o}2CuO\\ 8,Mg+2HCl\to MgCl_2+H_2\)
\(K_2SO_4+Ba\left(NO_3\right)_2\rightarrow BaSO_4+2KNO_3\\ 2FeCl_2+Cl_2\underrightarrow{t^O}2FeCl_3\\ O_2+2Zn\rightarrow2ZnO\)