All chemical equations high school ( science class
 

Formula:
1, sulfate test: BaCl2 + Na2SO4 = BaSO4 ↓ + 2NaCl
2, carbonate test: CaCl2 + Na2CO3 = CaCO3 ↓ + 2NaCl
3, sodium carbonate and hydrochloric acid : Na2CO3 + 2HCl = 2NaCl + H2O + CO2 ↑
4, charcoal reduction of copper oxide: 2CuO + C temperature 2Cu + CO2 ↑
5, iron and copper sulfate solution reaction: Fe + CuSO4 = FeSO4 + Cu
6, calcium chloride and sodium carbonate solution reaction: CaCl2 + Na2CO3 = CaCO3 ↓ + 2NaCl
7, sodium burns in air: 2Na + O2 △ Na2O2
sodium and oxygen reaction: 4Na + O2 = 2Na2O
8, Sodium peroxide reacts with water: 2Na2O2 + 2H2O = 4NaOH + O2 ↑
9, sodium peroxide and carbon dioxide reaction: 2Na2O2 + 2CO2 = 2Na2CO3 + O2
10, sodium reacts with water: 2Na + 2H2O = 2NaOH + H2 ↑
11, iron and steam reaction: 3Fe + 4H2O (g) = F3O4 + 4H2 ↑
12, aluminum and sodium hydroxide solution reaction: 2Al + 2NaOH + 2H2O = 2NaAlO2 + 3H2 ↑
13, calcium oxide and water reaction: CaO + H2O = Ca (OH) 2
14, iron oxide and hydrochloric acid reaction: Fe2O3 + 6HCl = 2FeCl3 + 3H2O
15, alumina and hydrochloric acid : Al2O3 + 6HCl = 2AlCl3 + 3H2O
16, alumina and sodium hydroxide solution reaction: Al2O3 + 2NaOH = 2NaAlO2 + H2O
17, ferric chloride and sodium hydroxide solution reaction: FeCl3 + 3NaOH = Fe ( OH) 3 ↓ + 3NaCl
18, ferrous sulfate and sodium hydroxide solution reaction: FeSO4 + 2NaOH = Fe (OH) 2 ↓ + Na2SO4
19, ferrous hydroxide is oxidized to iron hydroxide: 4Fe (OH) 2 + 2H2O + O2 = 4Fe (OH) 3
20, thermal decomposition of iron hydroxide: 2Fe (OH) 3 △ Fe2O3 + 3H2O ↑
21, Laboratory Preparation of aluminum hydroxide: Al2 ( SO4) 3 + 6NH3 · H2O = 2Al (OH) 3 ↓ + 3 (NH3) 2SO4
22, aluminum hydroxide and hydrochloric acid reaction: Al (OH) 3 + 3HCl = AlCl3 + 3H2O
23, OH reaction of aluminum with sodium hydroxide solution: Al (OH) 3 + NaOH = NaAlO2 + 2H2O
24, thermal decomposition of aluminum hydroxide: 2Al (OH) 3 △ Al2O3 + 3H2O
25, ferric chloride solution and iron reaction: 2FeCl3 + Fe = 3FeCl2
26, ferrous chloride pass into the chlorine: 2FeCl2 + Cl2 = 2FeCl3
27, silica and hydrofluoric acid reaction: SiO2 + 4HF = SiF4 + 2H2O
Si simple substance and hydrofluoric acid reaction: Si + 4HF = SiF4 + 2H2 ↑
28, silica and calcium oxide high-temperature reaction: SiO2 + CaO temperature CaSiO3
29, silicon dioxide and sodium hydroxide solution reaction: SiO2 + 2NaOH = Na2SiO3 + H2O
30, to pass into the sodium silicate solution of carbon dioxide: Na2SiO3 + CO2 + H2O = Na2CO3 + H2SiO3 ↓
31, sodium silicate and hydrochloric acid: Na2SiO3 + 2HCl = 2NaCl + H2SiO3 ↓
32, reaction of chlorine with metallic iron: 2Fe + 3Cl2 light 2FeCl3
33, chlorine and copper reaction: Cu + Cl2 light CuCl2
34, reaction of chlorine and sodium: 2Na + Cl2 lit 2NaCl
35, chlorine reacts with water: Cl2 + H2O = HCl + HClO
36, hypochlorous light decomposition: 2HClO light 2HCl + O2 ↑
37, chlorine and sodium hydroxide solution reaction: Cl2 + 2NaOH = NaCl + NaClO + H2O
38, chlorine and lime reaction: 2Cl2 + 2Ca (OH) 2 = CaCl2 + Ca (ClO) 2 + 2H2O
39, hydrochloric acid and silver nitrate solution reaction: HCl + AgNO3 = AgCl ↓ + HNO3
40, the long-term home bleaching powder exposed in the air: Ca (ClO) 2 + H2O + CO2 = CaCO3 ↓ + 2HClO
41, sulfur dioxide and water reaction: SO2 + H2O ≈ H2SO3
42, nitrogen and oxygen in the discharge of the reaction: N2 + O2 discharge 2NO
43, nitric oxide and oxygen reaction: 2NO + O2 = 2NO2
44, nitrogen dioxide and water reaction: 3NO2 + H2O = 2HNO3 + NO
45, sulfur dioxide and oxygen in the catalyst reaction: 2SO2 + O2 catalyst 2SO3
46, sulfur trioxide reacts with water: SO3 + H2O = H2SO4
47, concentrated sulfuric acid and copper reaction: Cu + 2H2SO4 (concentration) △ CuSO4 + 2H2O + SO2 ↑
48, concentrated sulfuric acid and charcoal reaction: C + 2H2SO4 (concentration) △ CO2 ↑ + 2SO2 ↑ + 2H2O
49, concentrated nitric acid and copper reaction: Cu + 4HNO3 (concentration) = Cu (NO3) 2 + 2H2O + 2NO2 ↑
50, dilute nitric acid and copper reaction: 3Cu + 8HNO3 (diluted) △ 3Cu (NO3) 2 + 4H2O + 2NO ↑
51, ammonia Thermal decomposition: NH3 · H2O △ NH3 ↑ + H2O
52, ammonia and hydrogen chloride reaction: NH3 + HCl = NH4Cl
53, ammonium chloride thermal decomposition: NH4Cl △ NH3 ↑ + HCl ↑
54, Thermal decomposition of ammonium bicarbonate: NH4HCO3 △ NH3 ↑ + H2O ↑ + CO2 ↑
55, ammonium nitrate and sodium hydroxide reaction: NH4NO3 + NaOH △ NH3 ↑ + NaNO3 + H2O
56, laboratory production of ammonia take: 2NH4Cl + Ca (OH) 2 △ CaCl2 + 2H2O + 2NH3 ↑
57, chlorine and hydrogen reaction: Cl2 + H2 lit 2HCl
58, ammonium sulfate and sodium hydroxide: (NH4) 2SO4 + 2NaOH △ 2NH3 ↑ + Na2SO4 + 2H2O
59, SO2 + CaO = CaSO3
60, SO2 + 2NaOH = Na2SO3 + H2O
61, SO2 + Ca (OH) 2 = CaSO3 ↓ + H2O
62 , SO2 + Cl2 + 2H2O = 2HCl + H2SO4
63, SO2 + 2H2S = 3S + 2H2O
64, NO, NO2 recovery: NO2 + NO + 2NaOH = 2NaNO2 + H2O
65, Si + 2F 2 = SiF4
66, Si + 2NaOH + H2O = NaSiO3 +2 H2 ↑
67, the quality of silicon single laboratory method: Preparation of thick silica: SiO2 + 2C temperature furnace Si + 2CO (quartz sand) ( Coke) (thick silicon)

thick silicon into pure silicon: Si (coarse) + 2Cl2 △ SiCl4

SiCl4 + 2H2 temperature Si (pure) + 4HCl


combination reaction
1, magnesium burning in air: 2Mg + O2 lit 2MgO
2, iron burning in oxygen: 3Fe + 2O2 light Fe3O4
3, aluminum burning in air: 4Al + 3O2 lit 2Al2O3
4, hydrogen burns in air: 2H2 + O2 lit 2H2O
5, red phosphorus burns in air: 4P + 5O2 light 2P2O5
6, sulfur in the air burning: S + O2 lit SO2
7, the oxygen in the combustion of carbon: C + O2 ignite CO2
8, carbon incomplete combustion in oxygen: 2C + O2 lit 2CO
9, carbon dioxide by burning carbon layer: C + CO2 temperature 2CO
10, carbon monoxide burning in oxygen: 2CO + O2 lit 2CO2
11, carbon dioxide and water reaction (carbon dioxide leads to the purple litmus test solution): CO2 + H2O === H2CO3
12, lime dissolved in water: CaO + H2O === Ca (OH) 2
13, anhydrous copper sulfate as a drying agent: CuSO4 + 5H2O ==== CuSO4? 5H2O
14, sodium in chlorine gas Burning: 2Na + Cl2 light 2NaCl

decomposition
15, Laboratory of oxygen with hydrogen peroxide system: 2H2O2 MnO2 2H2O + O2 ↑
16, heating potassium permanganate: 2KMnO4 heating K2MnO4 + MnO2 + O2 ↑
17, under the action of water in the DC decomposition: 2H2O power 2H2 ↑ + O2 ↑
18, unstable carbonate decomposition: H2CO3 === H2O + CO2 ↑
19, high-temperature calcination of limestone (carbon dioxide industrial system of law): CaCO3 hot CaO + CO2 ↑

replacement reaction
20, iron and copper sulfate solution reaction: Fe + CuSO4 == FeSO4 + Cu
21, zinc and dilute sulfuric acid reaction ( Laboratory Preparation of Hydrogen): Zn + H2SO4 == ZnSO4 + H2 ↑
22, magnesium and dilute hydrochloric acid reaction: Mg + 2HCl === MgCl2 + H2 ↑
23, hydrogen reduction of copper oxide: H2 + CuO heating Cu + H2O
24, charcoal reduction of copper oxide: C + 2CuO temperature 2Cu + CO2 ↑
25, the combustion of methane in the air: CH4 + 2O2 ignite CO2 + 2H2O
26, water vapor through the burning of carbon layer: H2O + C high-temperature H2 + CO
27, coke, iron oxide reduction: 3C + 2Fe2O3 temperature 4Fe + 3CO2 ↑

other
28, sodium hydroxide solution and copper sulfate solution reaction: 2NaOH + CuSO4 == Cu (OH) 2 ↓ + Na2SO4
29, the combustion of methane in the air: CH4 + 2O2 ignite CO2 + 2H2O
30, alcohol burns in air: C2H5OH + 3O2 light 2CO2 + 3H2O
31, carbon monoxide Reduction of copper oxide: CO + CuO heating Cu + CO2
32, carbon monoxide reduction of iron oxide: 3CO + Fe2O3 temperature 2Fe + 3CO2
33, carbon dioxide, by clarifying lime (test of carbon dioxide): Ca (OH) 2 + CO2 == == CaCO3 ↓ + H2O
34, sodium hydroxide and carbon dioxide reaction (removal of carbon dioxide): 2NaOH + CO2 ==== Na2CO3 + H2O
35, limestone (or marble) with dilute hydrochloric acid (carbon dioxide experiment chamber system of law): CaCO3 + 2HCl === CaCl2 + H2O + CO2 ↑
36, sodium carbonate and concentrated hydrochloric acid reaction (foam principle): Na2CO3 + 2HCl === 2NaCl + H2O + CO2 ↑

one. Material reaction with oxygen:
(1) elemental reaction with oxygen:
1. Magnesium burns in air: 2Mg + O2 lit 2MgO
2. Iron burning in oxygen: 3Fe + 2O2 Fe3O4 lit
3. copper heat in the air: 2Cu + O2 heating 2CuO
4. aluminum burns in air: 4Al + 3O2 light 2Al2O3
5. hydrogen combustion in air: 2H2 + O2 lit 2H2O
6. of red phosphorus burns in air: 4P + 5O2 light 2P2O5
7. sulfur burns in air: S + O2 lit SO2
8. combustion of carbon in oxygen: C + O2 ignite CO2
9. Carbon incomplete combustion in oxygen: 2C + O2 lit 2CO
(2) the reaction with oxygen compounds:
10. monoxide burning in oxygen: 2CO + O2 lit 2CO2
11. Methane burns in air: CH4 + 2O2 light CO2 + 2H2O
12. alcohol burns in air: C2H5OH + 3O2 2CO2 + 3H2O
II lit. Several decomposition reaction:
13. The role of water in the DC decomposition: 2H2O power 2H2 ↑ + O2 ↑
14. Heating basic copper carbonate: Cu2 (OH) 2CO3 heating 2CuO + H2O + CO2 ↑
15. heating potassium chlorate (a small amount of manganese dioxide): 2KClO3 ==== 2KCl + 3O2 ↑
16. heating potassium permanganate: 2KMnO4 heating K2MnO4 + MnO2 + O2 ↑
17. carbonate instability The decomposition: H2CO3 === H2O + CO2 ↑
18. calcination of limestone: CaCO3 CaO + CO2 ↑
heat three. Several oxidation-reduction reaction:
19. Hydrogen reduction of copper oxide: H2 + CuO heating Cu + H2O
20. Charcoal reduction of copper oxide: C + 2CuO temperature 2Cu + CO2 ↑
21. Coke iron oxide reduction: 3C + 2Fe2O3 temperature 4Fe + 3CO2 ↑
22. coke, iron oxide reduction: 2C + Fe3O4 temperature 3Fe + 2CO2 ↑
23. monoxide reduction of copper oxide: CO + CuO heating Cu + CO2
24. monoxide oxidation reduction Rail: 3CO + Fe2O3 temperature 2Fe + 3CO2
25. monoxide reducing iron oxide: 4CO + Fe3O4 temperature 3Fe + 4CO2
IV. Elemental, oxide, acid, alkali, salt, the relationship between the
(1) elemental metal salt + hydrogen + Acid -------- (replacement reaction)
26. Zinc and dilute sulfuric acid Zn + H2SO4 = ZnSO4 + H2 ↑
27. iron and sulfuric acid Fe + H2SO4 = FeSO4 + H2 ↑
28. magnesium and sulfuric acid Mg + H2SO4 = MgSO4 + H2 ↑
29. aluminum and sulfuric acid 2Al + 3H2SO4 = Al2 (SO4) 3 +3 H2 ↑
30. zinc and dilute hydrochloric acid Zn + 2HCl === ZnCl2 + H2 ↑
31. iron and dilute hydrochloric acid Fe + 2HCl === FeCl2 + H2 ↑
32. magnesium and dilute hydrochloric acid Mg + 2HCl === MgCl2 + H2 ↑
33. aluminum and dilute hydrochloric acid 2Al + 6HCl == 2AlCl3 + 3H2 ↑
(2) elemental metal + salt (solution) --- ---- Another alternative metal + salt
34. iron and copper sulfate solution reaction: Fe + CuSO4 === FeSO4 + Cu
35. zinc and copper sulfate solution reaction: Zn + CuSO4 = == ZnSO4 + Cu
36. copper and mercury nitrate solution reaction: Cu + Hg (NO3) 2 === Cu (NO3) 2 + Hg
(3) alkaline oxide + acid ---- ---- salt + water
37. ferric oxide and hydrochloric acid reaction: Fe2O3 + 6HCl === 2FeCl3 + 3H2O
38. ferric oxide and sulfuric acid reaction: Fe2O3 + 3H2SO4 === Fe2 (SO4) 3 + 3H2O
39. oxide copper and dilute hydrochloric acid: CuO + 2HCl ==== CuCl2 + H2O
40. oxide copper and dilute sulfuric acid reaction: CuO + H2SO4 ==== CuSO4 + H2O
41. hydroxide and sulfuric acid reaction: MgO + H2SO4 ==== MgSO4 + H2O
42. calcium oxide and hydrochloric acid reaction: CaO + 2HCl ==== CaCl2 + H2O
(4) acid oxides + base salt + water --------
43. Caustic exposure to the air deterioration: 2NaOH + CO2 ==== Na2CO3 + H2O
44. Caustic soda to absorb sulfur dioxide gas: 2NaOH + SO2 ==== Na2SO3 + H2O
45. Caustic sodium absorption of sulfur trioxide gas: 2NaOH + SO3 ==== Na2SO4 + H2O
46. On the deterioration in air lime: Ca (OH) 2 + CO2 ==== CaCO3 ↓ + H2O
47. Hydrated lime to absorb sulfur dioxide: Ca (OH) 2 + SO2 ==== CaSO3 ↓ + H2O
( 5) -------- acid + base salt + water
48. Hydrochloric acid and caustic soda from the reaction: HCl + NaOH ==== NaCl + H2O
49. Hydroxide and hydrochloric acid reaction: HCl + KOH ==== KCl + H2O
50. Hydrochloric acid and cupric hydroxide reaction: 2HCl + Cu (OH) 2 ==== CuCl2 + 2H2O
51. Hydrochloric acid and calcium hydroxide reaction: 2HCl + Ca (OH) 2 ==== CaCl2 + 2H2O
52. Hydrochloric acid and iron hydroxide reaction: 3HCl + Fe (OH) 3 ==== FeCl3 + 3H2O
53. hyperacidity drug treatment of aluminum hydroxide: 3HCl + Al (OH) 3 ==== AlCl3 + 3H2O
54. sulfuric acid and caustic soda reaction: H2SO4 + 2NaOH ==== Na2SO4 + 2H2O
55. sulfuric acid and potassium hydroxide reaction: H2SO4 + 2KOH ==== K2SO4 + 2H2O
56. sulfuric acid and cupric hydroxide reaction: H2SO4 + Cu (OH) 2 ==== CuSO4 + 2H2O
57. sulfuric acid and iron hydroxide reaction: 3H2SO4 + 2Fe (OH) 3 ==== Fe2 (SO4) 3 + 6H2O
58. nitric acid and caustic soda reaction: HNO3 + NaOH ==== NaNO3 + H2O
(6) acid + acid + salt -------- Another alternative salt
59. Marble and dilute hydrochloric acid reaction: CaCO3 + 2HCl === CaCl2 + H2O + CO2 ↑
60. Dilute hydrochloric acid and sodium carbonate: Na2CO3 + 2HCl === 2NaCl + H2O + CO2 ↑
61. Magnesium carbonate and dilute hydrochloric acid: MgCO3 + 2HCl === MgCl2 + H2O + CO2 ↑
62. Hydrochloric acid and silver nitrate solution reaction: HCl + AgNO3 === AgCl ↓ + HNO3
63. Sulfuric acid and sodium carbonate reaction: Na2CO3 + H2SO4 === Na2SO4 + H2O + CO2 ↑
64. Sulfuric acid and barium chloride solution reaction: H2SO4 + BaCl2 ==== BaSO4 ↓ + 2HCl
(7) -------- another alkali + alkali + salt, another salt
65. Sodium hydroxide and copper sulfate: 2NaOH + CuSO4 ==== Cu (OH) 2 ↓ + Na2SO4
66. Sodium hydroxide and ferric chloride: 3NaOH + FeCl3 ==== Fe (OH) 3 ↓ + 3NaCl
67. Sodium hydroxide and magnesium chloride: 2NaOH + MgCl2 ==== Mg (OH) 2 ↓ + 2NaCl
68. Hydroxide chloride and copper: 2NaOH + CuCl2 ==== Cu (OH) 2 ↓ + 2NaCl
69. calcium hydroxide and sodium carbonate: Ca (OH) 2 + Na2CO3 === CaCO3 ↓ + 2NaOH
(8) ----- salt + salt two new salt
70. Sodium chloride solution and silver nitrate solution: NaCl + AgNO3 ==== AgCl ↓ + NaNO3
71. Sodium sulfate and barium chloride: Na2SO4 + BaCl2 ==== BaSO4 ↓ + 2NaCl
five. Other reaction:
72. Carbon dioxide dissolved in water: CO2 + H2O === H2CO3
73. Lime dissolved in water: CaO + H2O === Ca (OH) 2
74. Sodium oxide dissolved in water: Na2O + H2O ==== 2NaOH
75. Trioxide dissolve in water: SO3 + H2O ==== H2SO4
76. Thermal decomposition of copper sulfate crystals: CuSO4? 5H2O heating CuSO4 + 5H2O
77. Anhydrous copper sulfate as a drying agent: CuSO4 + 5H2O ==== CuSO4? 5H2

chemical equation reaction phenomena application
2Mg + O2 or Δ2MgO intense fire burning. Bright white light. Form a white solid. Exothermic . have a lot of white smoke flares
2Hg + O2 white light or Δ2HgO white liquid, to form a red solid Lavoisier experimental
2Cu + O2 Δ2CuO red light or black metal into solid
4Al +3 O2 ignite or Δ2Al2O3 silvery white metal into solid
3Fe +2 O2 Fe3O4 intense fire burning, Mars great success, generating a black solid, high-temperature heat 4Fe + 3O2 2Fe2O3
C + O2 CO2 intense fire burning, white, heat, so that lime water became turbid
S + O2 SO2 intense fire burning, heat, pungent gas, air, light blue flame. oxygen, blue-violet light the flame
2H2 + O2 2H2O pale blue flame, heat, generate the anhydrous CuSO4 blue liquid (water) energy fuel ignited 2P2O5
4P +5 O2 severe burns, a lot of white smoke, heat, form a white solid proof of the oxygen content in air
CH4 +2 O2 blue light 2H2O + CO2 flame, heat, generate the limewater to become cloudy gas and liquid anhydrous CuSO4 blue (water) methane and natural gas combustion
2C2H2 +5 O2 2H2O +4 CO2 light blue flame, heat, smoke, generated to become cloudy limewater anhydrous CuSO4 gas and the blue liquid (water) oxygen-acetylene flame, welding and cutting metal
2KClO3MnO2 Δ2KCl +3 O2 ↑ generate the resurgence of wood with the Mars Laboratory Preparation of oxygen gas
2KMnO4Δ K2MnO4 + MnO2 + O2 ↑ purple to black, generating the resurgence of wood with the Mars Laboratory Preparation of oxygen gas
2HgOΔ2Hg + O2 ↑ red to white to produce the resurgence of wood with Mars, the gas tension tin tile experimental
2H2O 2H2 ↑ + O2 ↑ power of water into hydrogen and oxygen to power the electrolysis of water
Cu2 (OH) 2CO3Δ2CuO + H2O + CO2 ↑ dark green change, test tube with liquid, the lime water turbidity change of gas P. heating
NH4HCO3ΔNH3 ↑ + H2O + CO2 ↑ white solid disappeared, the wall with liquid, so that ammonium bicarbonate limewater long-term exposure variable cloudy gas in the air will disappear
Zn + H2SO4 = ZnSO4 + H2 ↑ a large number of bubbles production, preparation of zinc tablets gradually dissolve laboratory hydrogen
Fe + H2SO4 = FeSO4 + H2 ↑ a large number of bubbles, metal particles gradually dissolve
Mg + H2SO4 = MgSO4 + H2 ↑ a large number of bubbles, metal particles gradually dissolve
2Al +3 H2SO4 = Al2 (SO4) 3 +3 H2 ↑ a large number of bubbles, metal particles gradually dissolve
Fe2O3 +3 H2 Δ 2Fe +3 H2O silver gradually becomes red, test tube with liquid metal smelting, the use of hydrogen reduction of
Fe3O4 +4 H2 Δ3Fe +4 H2O gradually becomes black silver, test tube with liquid metal smelting, the use of hydrogen reduction
WO3 +3 H2Δ W +3 H2O tungsten smelting, the use of hydrogen reduction of
MoO3 +3 H2 ΔMo +3 H2O smelting metal molybdenum, the use of hydrogen reduction
2Na + Cl2Δ 2NaCl severe burns or ignite, yellow flame the formation of ionic compounds,
H2 + Cl2 2HCl light or light pale flame lit , bottle of white mist formation of covalent compounds, preparation hydrochloride
CuSO4 +2 NaOH = Cu (OH) 2 ↓ + Na2SO4 blue precipitate formation, the upper clear solution for the conservation of mass experiment
2C + O2 2CO coal fire common reaction furnace, air pollutants, gas poisoning because
2C O + O2 2CO2 blue flame gas fire burning
C + CuO 2Cu + CO2 ↑ temperature gradually turns red, black, resulting in changes to clarify the lime turbidity of the gas metal smelting
2Fe2O3 +3 C temperature 4Fe + 3CO2 ↑ Metallurgical
Fe3O4 +2 C 3Fe + 2CO2 ↑ high temperature metal smelting temperature
C + CO2 2CO
CO2 + H2O = H2CO3 carbonic acid to litmus proof of carbonic acid red
H2CO3 ΔCO2 ↑ + H2O litmus red fade
Ca (OH) 2 + CO2 = CaCO3 ↓ + H2O CO2 to clarify the application of lime water turbidity test and variable lime to paint the walls
CaCO3 + H2O + CO2 = Ca (HCO3) 2 white precipitate gradually dissolved the formation of caves, rock weathering
Ca (HCO3) 2Δ CaCO3 ↓ + H2O + CO2 ↑ white precipitate, resulting in changes to clarify the cloudy limewater scale formation of gas . stalactite formation
2NaHCO3ΔNa2CO3 + H2O + CO2 ↑ turbidity produced to clarify the gas changes soda lime steamed buns
CaCO3 CaO + CO2 ↑ industrial high-temperature preparation of carbon dioxide and quicklime
CaCO3 +2 HCl = CaCl2 + H2O + CO2 ↑ solid gradually dissolved, there are changes to clarify the cloudy limewater Laboratory Preparation of carbon dioxide gas, in addition to scale
Na2CO3 + H2SO4 = Na2SO4 + H2O + CO2 ↑ gradually dissolved solids, turbidity changes are made to clarify the lime of the gas foam theory
Na2CO3 +2 HCl = 2NaCl + H2O + CO2 ↑ gradually dissolved solids, turbidity changes are made to clarify the lime of the gas foam principle
MgCO3 +2 HCl = MgCl2 + H2O + CO2 ↑ solid gradually dissolved, with the clear limewater Variable cloudy gas
CuO + COΔ Cu + CO2 black gradually turns red, resulting in changes to clarify the cloudy limewater gas smelting metal
Fe2O3 +3 CO 2Fe +3 CO2 high temperature metal smelting temperature principle
Fe3O4 +4 CO 3Fe +4 CO2 Metallurgical principles
WO3 +3 CO W +3 CO2 high temperature metal smelting principle
CH3COOH + NaOH = CH3COONa + H2O
2CH3OH +3 O2 lit 2CO2 +4 H2O
C2H5OH +3 O2 blue light 2CO2 +3 H2O flame, have to become cloudy limewater gas, heat of combustion of alcohol
Fe + CuSO4 = Cu + FeSO4 silver-white metal surface covered with red material wet copper, copper
Mg + FeSO4 = Fe + MgSO4 solution from light green to colorless Cu + Hg (NO3) 2 = Hg + Cu (NO3) 2
Cu +2 AgNO3 = 2Ag + Cu (NO3) 2 red and silver-white metal surface covered with silver
Zn material + CuSO4 = Cu + ZnSO4 green white metal surface covered with red material copper
Fe2O3 +6 HCl = 2FeCl3 +3 H2O dissolved rust, yellow solution of iron rust
Al2O3 +6 HCl = 2AlCl3 +3 H2O white solid dissolved
Na2O +2 HCl = 2NaCl + H2O white solid dissolved
CuO +2 HCl = CuCl2 + H2O black solid dissolved, the solution was blue
ZnO +2 HCl = ZnCl2 + H2O white solid dissolved
MgO +2 HCl = MgCl2 + H2O white solid dissolved
CaO +2 HCl = CaCl2 + H2O white solid dissolved
NaOH + HCl = NaCl + H2O white solid dissolved
Cu (OH) 2 +2 HCl = CuCl2 +2 H2O dissolved
Mg solid blue (OH) 2 +2 HCl = MgCl2 +2 H2O white solid dissolved
Al (OH) 3 +3 HCl = AlCl3 +3 H2O white solid dissolved Wei Shuping treatment of hyperacidity
Fe (OH) 3 +3 HCl = FeCl3 +3 H2O red brown precipitate dissolved, the solution was yellow
Ca (OH) 2 +2 HCl = CaCl2 +2 H2O
HCl + AgNO3 = AgCl ↓ + HNO3 white precipitate, insoluble in dilute nitric acid test of the principle of
Fe2O3 Cl- +3 H2SO4 = Fe2 (SO4) 3 +3 H2O dissolved rust, yellow solution of iron rust
Al2O3 +3 H2SO4 = Al2 (SO4) 3 +3 H2O white solid dissolved
CuO + H2SO4 = CuSO4 + H2O black solid dissolved, solution blue
ZnO + H2SO4 = ZnSO4 + H2O white solid dissolved
MgO + H2SO4 = MgSO4 + H2O white solid dissolved
2NaOH + H2SO4 = Na2SO4 +2 H2O
Cu (OH) 2 + H2SO4 = CuSO4 +2 H2O blue solid dissolved
Ca (OH) 2 + H2SO4 = CaSO4 +2 H2O
Mg (OH) 2 + H2SO4 = MgSO4 +2 H2O white solid dissolved
2Al (OH) 3 +3 H2SO4 = Al2 (SO4) 3 +3 H2O white solid dissolved
2Fe (OH) 3 +3 H2SO4 = Fe2 (SO4) 3 +3 H2O reddish-brown precipitate dissolved, the solution was yellow
Ba (OH) 2 + H2SO4 = BaSO4 ↓ + 2H2O white precipitate, insoluble in dilute nitric acid SO42-tested principles of
BaCl2 + H2SO4 = BaSO4 ↓ +2 HCl white precipitate, insoluble in dilute nitric acid SO42-tested principle of
Ba (NO3) 2 + H2SO4 = BaSO4 ↓ +2 HNO3 white precipitate, insoluble in dilute nitric acid SO42-tested principles of
Na2O +2 HNO3 = 2NaNO3 + H2O white solid dissolved
CuO +2 HNO3 = Cu (NO3) 2 + H2O black solid dissolved, the solution blue
ZnO +2 HNO3 = Zn (NO3) 2 + H2O white solid dissolved
MgO +2 HNO3 = Mg (NO3) 2 + H2O white solid dissolved
CaO +2 HNO3 = Ca (NO3) 2 + H2O white solid dissolved
NaOH + HNO3 = NaNO3 + H2O
Cu (OH) 2 +2 HNO3 = Cu (NO3) 2 +2 H2O blue solid dissolved
Mg (OH) 2 +2 HNO3 = Mg (NO3) 2 +2 H2O white solid dissolved
Al (OH) 3 +3 HNO3 = Al (NO3) 3 +3 H2O white solid dissolved
Ca (OH) 2 +2 HNO3 = Ca (NO3) 2 +2 H2O
Fe ( OH) 3 +3 HNO3 = Fe (NO3) 3 +3 H2O reddish-brown precipitate dissolved, the solution was yellow
3NaOH + H3PO4 = 3H2O + Na3PO4
3NH3 + H3PO4 = (NH4) 3PO4
2NaOH + CO2 = Na2CO3 + H2O absorption of CO, O2, H2 in CO2,
2NaOH + SO2 = Na2SO3 + H2O 2NaOH + SO3 = Na2SO4 + H2O Treatment of sulfuric acid plant tail gas (SO2)
FeCl3 +3 NaOH = Fe (OH) 3 ↓ +3 NaCl solution yellow faded, red-brown precipitate generated
AlCl3 +3 NaOH = Al (OH) 3 ↓ +3 NaCl generated a white precipitate
MgCl2 +2 NaOH = Mg (OH) 2 ↓ +2 NaCl
CuCl2 +2 NaOH = Cu (OH) 2 ↓ +2 NaCl solution, faded blue, blue precipitate generated
CaO + H2O = Ca (OH) 2 into a solid block of white powder, lime stone mortar preparation
Ca (OH) 2 + SO2 = CaSO3 ↓ + H2O precipitate a white junior high school generally do not generate
Ca (OH) 2 + Na2CO3 = CaCO3 ↓ +2 NaOH a white precipitate generated industrial manufacturing caustic soda, a small amount of caustic soda manufacturing laboratory
Ba (OH) 2 + Na2CO3 = BaCO3 ↓ +2 NaOH a white precipitate generated
Ca (OH) 2 + K2CO3 = CaCO3 ↓ +2 KOH white precipitate generated
CuSO4 +5 H2O = CuSO4? H2O blue to white crystalline powder
CuSO4? H2OΔ CuSO4 +5 H2O white powder into a test material in the presence of blue water
AgNO3 + NaCl = AgCl ↓ + Na NO3 is not white precipitate dissolved in dilute nitric acid (similar reactions of other chloride) is applied to test the chlorine solution ion
BaCl2 + Na2SO4 = BaSO4 ↓ +2 NaCl dissolved in dilute nitric acid is not a white precipitate (sulphate of other similar reactions) is applied to test sulfate
CaCl2 + Na2CO3 = CaCO3 ↓ +2 NaCl generated a white precipitate
MgCl2 + Ba (OH) 2 = BaCl2 + Mg (OH) 2 ↓ a white precipitate generated
CaCO3 +2 HCl = CaCl2 + H2O + CO2 ↑
MgCO3 +2 HCl = MgCl2 + H2O + CO2 ↑
NH4NO3 + NaOH = NaNO3 + NH3 ↑ + H2O generated so moist blue litmus paper test of the gas used in the ammonium ion in solution
NH4Cl + KOH = KCl + NH3 ↑ + H2O generated so moist blue litmus paper gas