a) 6Fe + 4O₂ ---> 2Fe₃O₄₄

b) 2Al + 3Cl₂ ---> 2AlCl₃

c) CuO + 2HCl ---> CuCl₂ + H₂O

d) BaCl₂ + Na₂SO₄ ---> BaSO₄ + 2NaCl

\(3Fe+2O_2\rightarrow Fe_3O_4\)

\(2Al+3Cl_2\rightarrow2AlCl_3\)

\(CuO+2HCl\rightarrow CuCl_2+H_2O\)

\(BaCl_2+Na_2SO_4\rightarrow BaSO_4+2NaCl\)

\(Ca\left(OH\right)_2+Na_2CO_3\rightarrow CaCO_3+2NaOH\)

\(Zn+2HCl\rightarrow ZnCl_2+H_2\)

\(2KClO_3\rightarrow2KCl+3O_2\)

\(P_2O_5+3H_2O\rightarrow2H_3PO_4\)

\(4P+5O_2\rightarrow2P_2O_5\)

\(Na_2SO_4+BaCl_2\rightarrow2NaCl+BaSO_4\downarrow\\ 4Al+3O_2\rightarrow\left(t^o\right)2Al_2O_3\\ 2Zn+O_2\rightarrow\left(t^o\right)2ZnO\\ Mg+2HCl\rightarrow MgCl_2+H_2\)

1. CaO + 2HCl ---> CaCl₂ + H₂O (1 : 2 : 1 : 1)

2. 2Fe + 3Cl₂ ---t^o---> 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 ---t^o---> 2Al₂O₃ (4 : 3 : 2)

1. CaO + 2HCl -> CaCl₂ + H₂O

2. 2Fe + 3Cl₂ -> 2FeCl₃

3) Zn + 6HCl -> 2AlCl₃ + 3H₂

4. 3Ba(OH)₂ + 2FeCl₃ -> 2Fe(OH)₃ + 3BaCl₂

5.4Al+ 2O₂ -> 2Al₂O₃

\(1,CaO+2HCl\rightarrow CaCl_2+H_2O\left(1:2:1:1\right)\\ 2,2Fe+3Cl_2\rightarrow2FeCl_3\left(2:3:2\right)\\ 3,Zn+HCl\rightarrow AlCl_3+H_2\left(lỗi\right)\\ 4,3Ba\left(OH\right)_2+2FeCl_3\rightarrow2Fe\left(OH\right)_3+3BaCl_2\left(3:2:2:3\right)\\ 5,4Al+3O_2\underrightarrow{t^o}2Al_2O_3\left(\text{4:3:2}\right)\)

\(Ba\left(OH\right)_2+Na_2SO_4\rightarrow BaSO_4+2NaOH\)

\(C_2H_4+\dfrac{5}{2}O_2\underrightarrow{^{^{t^0}}}2CO_2+2H_2O\)

\(Fe+\dfrac{3}{2}Cl_2\underrightarrow{^{^{t^0}}}FeCl_3\)

\(Fe_xO_y+2yHCl\rightarrow xFeCl_{\dfrac{2y}{x}}+yH_2O\)

\(2Fe_xO_y+2yH_2SO_4\rightarrow xFe_2\left(SO_4\right)_{\dfrac{2y}{x}}+2yH_2O\)

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 

Tham khảo

a) 2Mg+ O2 ------>2 MgO

b)2Na+2H2O ---------->2NaOH+H2

c)Zn+2HCl--------> ZnCl2 +H2

d)Na2O +H2O------> 2NaOH

e)4P+5O2------>2P2O5

F) 2KCLO------->2KCL+O2

1. C + O₂ ⇒ CO₂

2. 2Fe + 3Cl₂ ⇒ 2FeCl₃

3. 4P + 5O₂ ⇒ 2P₂O₅

4. 2NaOH + H₂SO₄ ⇒ Na₂SO₄ + 2H₂O

5. 2AgNO₃ + ZnCl₂ ⇒ Zn(NO₃)₂ + 2AgCl

6. 3Fe + 2O₂ ⇒ Fe₃O₄

7. Cu(OH)₂ ⇒ CuO + H₂O

8. 2Al + 6HCl ⇒ 2AlCl₃ + 3H₂

9. N₂ + 3H₂ ⇒ 2NH₃

10. N₂ + O₂ ⇒ 2NO

1. \(2Al + H_2SO_4 \rightarrow Al_2(SO_4) + H_2\)

3. \(Mg(OH)_2 + 2HCl \rightarrow MgCl_2 + 2H_2O\)

4. \(Fe_2O_3 + 3H_2 \rightarrow2Fe + 3H_2O\)

5. \(CuSO_4 + BaCl_2 \rightarrow BaSO_4 + CuCl_2 \)

6. \(Fe(OH)_2 + 2HCl \rightarrow FeCl_2+ 2H_2O\)

7. \(4K+O_2\rightarrow2K_2O\)

9. \(2Al+3Cl_2\rightarrow2AlCl_3\)

10. \(K_2SO_4 + Ba(OH)_2 \rightarrow BaSO4 + 2KOH\)

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