初中常见化学方程式
4个回答

1:C+O2=点燃=CO2

2:S+O2=点燃=SO2

3:2Mg+O2=点燃=2MgO

4:3Fe+2O2=点燃=Fe3O4

5:4P+5O2=点燃=2P2O5

6:2Cu+O2=△=2CuO

7:2H2+O2=点燃=2H2O

8:2CO+O2=点燃=2CO2

9:2C+O2(不充分)=点燃=2CO

10:CO2+C=高温=2CO

11:CO2+H2O=H2CO3

11:Na2O+H2O=2NaOH

11:CaO+H2O=Ca(OH)2

11:SO3+H2O=H2SO4

(二)分解反应:

12 2KClO3=(MnO2=△=2KCl+3O2↑

13:2KMnO4=△=K2MnO4+MnO2+O2↑

14:Cu2(OH)2CO3=△=2CuO+H2O+CO2↑

15:2H2O=通电=2H2↑+O2↑

16:H2CO3=H2O+CO2↑

17:CaCO3=高温=CaO+CO2↑

18:CuSO4•5H2O=△=CuSO4+5H2O

18':Cu(OH)2=△=CuO+H2O

(三)置换反应

19):Zn+H2SO4=ZnSO4+H2↑

20:Zn+2HCl=ZnCl2+H2↑

21:Fe+2HCl=FeCl2+H2↑

22:Fe+H2SO4=FeSO4+H2↑

23:H2+CuO=△=Cu+H2O

24:C+2CuO=高温=2Cu+CO2↑

25:3C+2Fe2O3=高温=4Fe+3CO2↑

26:Fe+CuSO4=Cu+FeSO4

27:Cu+Hg(NO3)2=Hg+Cu(NO3)2

28:3H2+Fe2O3=△=2Fe+2H2O

29:2Al+3H2SO4=Al2(SO4)3+3H2↑

(四)复分解反应

31:CaCO3+2HCl=CaCl2+H2O+CO2↑

32:2NaOH+CuSO4=Cu(OH)2↓+Na2SO4

33:Na2CO3+2HCl=2NaCl+H2O+CO2↑

34:K2CO3+2HCl=2KCl+H2O+CO2↑

35:HCl+NaOH=NaCl+H2O

36:H2SO4+2NaOH=Na2SO4+2H2O

37:H2SO4+BaCl2=BaSO4↓+2HCl

38:HCl+AgNO3=AgCl↓(白)+HNO3

39:3NaOH+FeCl3=Fe(OH)3↓(红褐色)+3NaCl

40:BaCO3+2HNO3=Ba(NO3)2+CO2↑+H2O

41:Na2SO4+BaCl2=BaSO4↓+2NaCl

42:NaCl+AgNO3=AgCl↓+NaNO3

43:Na2CO3+Ca(OH)2=CaCO3↓+2NaOH

44:Al(OH)3+3HCl=AlCl3+3H2O

45:NH4NO3+NaOH=△=NaNO3+H2O+NH3↑

46:2Fe(OH)3+3H2SO4=Fe2(SO4)3

47:Fe2O3+6HCl=2FeCl3+3H2O

48:CuO+H2SO4=CuSO4+H2O

(五)其他:

49:CO2+Ca(OH)2=CaCO3↓+H2O

50:CO2+2NaOH=Na2CO3+H2O

51:SO2+2NaOH=Na2SO3+H2O

52:CO+CuO=△=Cu+CO2

53:3CO+Fe2O3=高温=2Fe+3CO2

54:CH4+2O2=点燃=CO2+2H2O

55:C2H5OH+3O2=点燃=2CO2+3H2O

56:2CH3OH+3O2=点燃=2CO2+4H2O