1, sulfate ion test: BaCl2+Na2SO4 = BaSO4↓+ 2NaCl.
2. Test of carbonate ion: CaCl2+Na2CO3 = CaCO3↓+2NaCl.
3. The reaction between sodium carbonate and hydrochloric acid: Na2CO3+2HCl = 2NaCl+H2O+CO2 =
4. Reduction of copper oxide with charcoal: 2CuO+C high temperature 2Cu+CO2↑ =
5. The reaction between iron sheet and copper sulfate solution: Fe+CuSO4 = FeSO4+Cu.
6. The reaction between calcium chloride and sodium carbonate solution: CaCl2+Na2CO3 = CaCO3↓+ 2NaCl.
7. Sodium burns in air: 2Na+O2 △ Na2O2.
Sodium reacts with oxygen: 4Na+O2 = 2Na2O.
8. The reaction between sodium peroxide and water: 2Na2O2+2H2O = 4NaOH+O2 =
9. The reaction between sodium peroxide and carbon dioxide: 2Na2O2+2CO2 = 2Na2CO3+O2.
10, the reaction of sodium and water: 2na+2h2o = 2nNaOH+H2 =
1 1. Reaction of iron with water vapor: 3fe+4h2o (g) = f3o4+4h2 =
12. the reaction of aluminum with sodium hydroxide solution: 2al+2Al+2NaOH+2H2O = 2NaAlO2+3H2↑ = =
13. The reaction between calcium oxide and water: CaO+H2O = Ca(OH)2.
14. The reaction between iron oxide and hydrochloric acid: Fe2O3+6HCl = 2FeCl3+3H2O.
15. The reaction between alumina and hydrochloric acid: Al2O3+6HCl = 2AlCl3+3H2O.
16. The reaction between alumina and sodium hydroxide solution: Al2O3+2NaOH = 2NALO2+H2O.
17. The reaction of ferric chloride with sodium hydroxide solution: FeCl3+3NaOH = Fe(OH)3↓+ 3NaCl.
18. The reaction between ferrous sulfate and sodium hydroxide solution: FeSO4+2NaOH = Fe(OH)2↓+ Na2SO4.
19, ferrous hydroxide is oxidized to ferric hydroxide: 4Fe(OH)2+2H2O+O2 = 4Fe(OH)3.
20. Thermal decomposition of iron hydroxide: 2fe (OH) 3 △ Fe2O3+3H2O =
2 1. Aluminum hydroxide prepared in laboratory: Al2 (SO4) 3+6HNH3? H2O = 2Al(OH)3↓ + 3(NH3)2SO4
22. The reaction between aluminum hydroxide and hydrochloric acid: Al(OH)3+3HCl = AlCl3+3H2O.
23. The reaction between aluminum hydroxide and sodium hydroxide solution: Al(OH)3+NaOH = NaAlO2+2H2O.
24. Thermal decomposition of aluminum hydroxide: 2Al(OH)3 △ Al2O3+3H2O.
25. Reaction between ferric chloride solution and iron powder: 2FeCl3+Fe = 3FeCl2.
26. Introduce chlorine into ferrous chloride: 2FeCl2+Cl2 = 2FeCl3.
27. The reaction between silicon dioxide and hydrofluoric acid: SiO2+4HF = SiF4+2H2O.
Silicon reacts with hydrofluoric acid: Si+4hf = SiF4+2H2 =
28. High temperature reaction of silica and calcium oxide: SiO2+CaO high temperature CaSiO3.
29. The reaction between silica and sodium hydroxide solution: SiO2+2NaOH = Na2SiO3+H2O.
30. Introduce carbon dioxide into the sodium silicate solution: Na2SiO3+CO2+H2O = Na2CO3+H2SiO3↓
3 1. The reaction between sodium silicate and hydrochloric acid: Na2SiO3+2HCl = 2NaCl+H2SiO3↓
32. Chlorine reacts with metallic iron: 2Fe+3Cl2 ignites 2FeCl3.
33. Chlorine reacts with copper: Cu+Cl2 ignites CuCl2.
34. Chlorine reacts with sodium metal: 2Na+Cl2 ignites 2NaCl.
35. Reaction between chlorine and water: Cl2+H2O = HCl+HClO.
36. Photolysis of hypochlorous acid: 2HClO illumination 2 HCl+O2 =
37. Chlorine reacts with sodium hydroxide solution: Cl2+2NaOH = NaCl+NaClO+H2O.
38. The reaction of chlorine with hydrated lime: 2cl2+2ca (OH) 2 = CaCl2+Ca (clo) 2+2h2o.
39. Reaction between hydrochloric acid and silver nitrate solution: HCl+AgNO3 = AgCl↓+HNO3.
40. Bleaching powder is exposed to air for a long time: Ca(ClO)2+H2O+CO2 = CaCO3↓+2HClO.
4 1. The reaction of sulfur dioxide with water: SO2+H2O ≈ H2SO3.
42. Nitrogen reacts with oxygen during discharge: N2+ oxygen releases 2NO.
43, nitric oxide and oxygen reaction: 2NO+O2 = 2NO2.
44. The reaction between nitrogen dioxide and water: 3NO2+H2O = 2HNO3+NO.
45. Sulfur dioxide reacts with oxygen under the action of catalyst: 2SO2+O2 catalyst 2SO3.
46. Reaction of sulfur trioxide with water: SO3+H2O = H2SO4.
47. The reaction between concentrated sulfuric acid and copper: Cu+2H2SO4 (concentrated) △ CuSO4+2H2O+SO2 =
48. The reaction between concentrated sulfuric acid and charcoal: C+2H2SO4 (concentrated) △ CO2 =+2SO2 =+2H2O.
49. The reaction between concentrated nitric acid and copper: Cu+4NO3 (concentrated) = Cu (NO3) 2+2H2O+2NO2 =
50. Reaction of dilute nitric acid with copper: 3Cu+8HNO3 (dilute) △ 3cu (NO3) 2+4h2o+2no =
5 1. Ammonia is decomposed by heating: NH3? H2O △ NH3↑ + H2O
52. Reaction between ammonia and hydrogen chloride: NH3+HCl = NH4Cl.
53. Ammonium chloride is decomposed by heating: NH4Cl △ NH3 =+HCl =
54. Thermal decomposition of ammonium bicarbonate: NH4CO3△ NH3 =+H2O = =
55. The reaction between ammonium nitrate and sodium hydroxide: NH4NO3+NaOH △ NH3 =+Nano3+H2O.
56. Laboratory preparation of ammonia: 2nh4cl+Ca (OH) 2 △ CaCl2+2H2O+2NH3 =
57. Reaction between chlorine and hydrogen: Cl2+H2 ignites 2HCl.
58. The reaction between ammonium sulfate and sodium hydroxide: (NH4) 2SO4+2NaOH △ 2NH3 =+Na2SO4+2H2O.
59、SO2 + CaO = CaSO3
60、SO2 + 2NaOH = Na2SO3 + H2O
6 1, SO2+calcium hydroxide = CaSO3↓+H2O
62、SO2 + Cl2 + 2H2O = 2HCl + H2SO4
63、SO2 + 2H2S = 3S + 2H2O
64. Recovery of NO and NO2: NO2+NO+2NaOH = 2NaNO2+H2O.
65、Si + 2F 2 = SiF4
66、Si + 2NaOH + H2O = Na2SiO3 +2H2↑
67. Laboratory preparation of simple silicon: preparation of crude silicon: SiO2+2C high temperature electric furnace Si+2CO.
(quartz sand) (coke) (coarse silicon)
Transformation from crude silicon to pure silicon: Si (crude) +2Cl2 △ SiCl4
SiCl4+2H2 high temperature silicon (pure) +4HCl
Metal nonmetal
1, Na reacts with H2O:
2Na+2H2O=2NaOH+H2↑
2. Reaction of Na2O2 with H2O (labeled electron transfer):
2Na2O2+2H2O=4NaOH+O2↑
3, the reaction of Na2O2 and CO2:
2na 2 o 2+2co 2 = 2na 2 co 3+O2↓
4. Sodium bicarbonate is decomposed by heating:
2NaHCO3=Na2CO3+CO2↑+H2O
5, Na2CO3 through excessive CO2:
Sodium carbonate+carbon dioxide +H2O= sodium bicarbonate
6, enough NaOH and CO2 reaction:
2NaOH+CO2=Na2CO3+H2O
7, NaOH and excess CO2 reaction:
2NaOH+CO2=Na2CO3+H2O
Sodium carbonate+carbon dioxide +H2O= sodium bicarbonate
8, the reaction of chlorine and H2O:
Cl2+H2O=HCl+HClO
9. Chlorine and sodium hydroxide solution (marked with electron transfer):
Cl2+NaOH=NaCl+NaClO+H2O
10, industrial bleaching powder:
2cl 2+Ca(OH)2 = CaCl 2+Ca(ClO)2+2H2O
1 1, bleaching principle of bleaching powder:
Ca(ClO)2+H2O=2HClO+CaCO3↓
12, laboratory-made Cl2 (marked with electron transfer):
4HCl+MnO2=Cl2↑+MnCl2+2H2O
13, drop chlorine water into NaI solution:
2NaI+Cl2=I2+2NaCl
14, magnesium reacts with hot water:
Mg+2H2O=Mg(OH)2+H2↑
Dropping NaOH into 15 and AlCl3;
AlCl3+3NaOH=Al(OH)3↓+3NaCl
NaOH is continuously dropped for precipitation and dissolution;
NaOH+Al(OH)3=NaAlO2+2H2O
16 and the reaction of Al2O3 with NaOH;
Alumina +2 sodium hydroxide = 2 sodium aluminate +H2O
17, H2S production in laboratory
Ferrous sulfate+sulfuric acid = ferrous sulfate+H2S =
18, H2O2 with a small amount of MnO2: (labeled electron transfer)
2H2O2=2H2O+O2↑
19, H2S becomes turbid after long-term storage or H2S combustion is incomplete;
2H2S+O2=2H2O+2S↓
20, complete combustion of H2S:
2H2S+3O2=2H2O+2SO2
21.Reaction of H2S with SO2: (Labeled Electron Transfer)
2H2S+SO2=3S↓+2H2O
22, SO2 into chlorine water fade:
SO2+Cl2+H2O=2HCl+H2SO4
23. Copper and concentrated H2SO4, heating: (Labeled electron transfer)
Cu+2H2SO4=CuSO4+SO2↑+2H2O
24. Co-heating of charcoal and concentrated H2SO4: (Labeled electron transfer)
C+2H2SO4=2H2O+CO2↑+2SO2↑
25, industrial crude silicon:
SiO 2+2C = Si+2co↑ Condition: In an electric furnace.
26, timely reaction with sodium hydroxide:
Silicon dioxide +2 sodium hydroxide = sodium silicate +H2O
27, two kinds of reactions in the glass industry:
Na2CO3+SiO2=Na2SiO3+CO2
CaCO3+SiO2=CaSiO3+CO2↑
28. sodium silicate plus CO? 2? Produce precipitation:
2H2O+na 2 SiO 3+CO2 = na2co 3+h4sio 4↓