Find the equation for all the decomposition reactions in the third chemistry

Overview: As follows:1. Water decomposes under the action of direct current:

2H2O2H2 +O2 Phenomenon: (1) Air bubbles are generated on the electrode. h2：

The gas produced by the O2 2:1 positive electrode can rekindle the sparkled sticks.

The gas produced by the negative electrode can be burned in the air to produce a light blue flame 2, heating basic copper carbonate: Cu2 (OH) 2CO32Cuo + H2O + CO2 Phenomenon: The green powder turns black, water droplets are generated on the inner wall of the test tube, and the clarified lime water becomes turbid.

3. Heating potassium chlorate and manganese dioxide to produce oxygen: 2kclo32kcl+3o2 4. Heating potassium permanganate to oxygen: 2kmNO4K2mNO4+MNO2+O2 5. Hydrogen peroxide to produce oxygen in the laboratory

2H2O22H2O+O2 Phenomenon: Bubbles are generated, and the wooden strips with sparks rekindle.

Decomposition reaction:

Potassium chlorate and manganese dioxide co-heating (laboratory O2): 2kClO3 = (mNO2 = = 2kCl + 3O2

Heating potassium permanganate: 2kmNO4 = =K2mNO4+mNO2+O2 Heating basic copper carbonate: Cu2(OH)2CO3= =2CuO+H2O+CO2

Electrolyzed water: 2H2O = energized = 2H2 + O2

Carbonic acid is unstable and consists of H2CO3 = H2O + CO2

High temperature calcined limestone: CaCO3 = high temperature = Cao + CO2 Copper sulfate crystals lose crystal water when heated: CuSO4 5H2O= = CuSO4 + 5H2O

Copper hydroxide is heated into Cu(OH)2= =CuO+H2O

Decomposition reaction: (one becomes many).

1. Oxygen from hydrogen peroxide and manganese dioxide: 2ho 2ho+ o 2. Oxygen from potassium permanganate: 2kmno kmno + mno+ o 3. Oxygen from potassium chlorate and manganese dioxide

2kclo 2kcl+ 3 o 4, electrostatic decomposition of water: 2 ho 2h + o 5, unstable carbonic acid, easy to decompose: HCO === Ho + CO 6, high temperature calcined limestone:

Caco CaO+ Co 7, Copper Hydroxide Thermal Decomposition: Cu(OH) CuO+ Ho8, Basic Copper Carbonate Thermal Decomposition: Cu(OH)Co 2CuO+ Ho + Co

9. Thermal decomposition of calcium bicarbonate: Ca(HCO) Caco + Ho + CO 10. Thermal decomposition of ammonium bicarbonate: NHHCO NH Ho + CO

Ignite 2mg+O2===2mgo

Ignite s+O2 ====So2

Ignite C+O2====CO2

Ignite 2C+O22KCl+3O2

2kmNO4===K2mNO4+MNO2+O2 energized 2H2O====2H2 +O2

h2co3===h2o+co2↑

High temperature CaCO3====CaO+CO2

cuso4?5h2o====cuso4+5h2o↑

Decomposition reaction is one of the four common basic types of chemical reactions, which refers to the reaction of one substance to produce two or more new substances, which can be simply understood as "one becomes many". Some of these reactions are redox reactions and some are non-redox reactions. Decomposition reactions can be classified into different categories according to different classification criteria.

In addition, only the compound can undergo a decomposition reaction. Carbonate, nitrate, and ammonium salts are generally easy to decompose, and the reaction shows a certain regularity.

1. Hydrogen peroxide for oxygen production in the laboratory: 2H2O2 MNO2 2H2O+ O2

2. Heating potassium permanganate: 2kmNO4 heating K2mNO4 + mNO2 + O2

3. Water is divided into 2h2o energized 2h2 + o2 under the action of direct current

4. Carbonic acid is unstable and divided into H2CO3 ==H2O + CO2

5. High-temperature calcined limestone (carbon dioxide industrial method): CaCO3 high-temperature CAO+CO2

6. Hydrochloric acid and caustic soda react: HCl + NaOH ==NaCl + H2O

7. Hydrochloric acid and potassium hydroxide reaction: HCl + KOH ==KCl +H2O

8. Hydrochloric acid and copper hydroxide reaction: 2HCl + Cu(OH)2 ==CuCl2 + 2H2O

9. Hydrochloric acid and calcium hydroxide reaction: 2HCl + Ca(OH)2 ==CaCl2 + 2H2O

10. Hydrochloric acid and iron hydroxide reaction: 3HCl + Fe(OH)3 ==FeCl3 + 3H2O

2h2o2=mno2=2h2o+o2 (up sign).

2kclo3 = mno2 = heating = 2kcl + 3o2 (up sign).

Decomposition reaction 1, laboratory hydrogen peroxide to oxygen: 2H2O2 mNO2 2H2O+ O2

2. Heating potassium permanganate: 2kmNO4 heating K2mNO4 + mNO2 + O2

3. Water is divided into 2h2o energized 2h2 + o2 under the action of direct current

4. Carbonic acid is unstable and divided into H2CO3 ==H2O + CO2

5. High-temperature calcined limestone (carbon dioxide industrial method): CaCO3 high-temperature CAO+CO2

Neutralization reaction. 6. Hydrochloric acid and caustic soda react: HCl + NaOH ==NaCl + H2O

7. Hydrochloric acid and potassium hydroxide reaction: HCl + KOH ==KCl +H2O

8. Hydrochloric acid and copper hydroxide reaction: 2HCl + Cu(OH)2 ==CuCl2 + 2H2O

9. Hydrochloric acid and calcium hydroxide reaction: 2HCl + Ca(OH)2 ==CaCl2 + 2H2O

10. Hydrochloric acid and iron hydroxide reaction: 3HCl + Fe(OH)3 ==FeCl3 + 3H2O

11. Aluminum hydroxide drug ** hyperacidity: 3HCl + Al(OH)3 ==ALCL3 + 3H2O

12. Sulfuric acid and caustic soda reaction: H2SO4 + 2NaOH ==Na2SO4 + 2H2O

13. Reaction of sulfuric acid and potassium hydroxide: H2SO4 + 2KOH ==K2SO4 + 2H2O

14. Reaction of sulfuric acid and copper hydroxide: H2SO4 + Cu(OH)2 ==CuSO4 + 2H2O

15. Sulfuric acid and iron hydroxide reaction: 3H2SO4 + 2FE(OH)3===FE2(SO4)3 + 6H2O

16. Nitric acid and caustic soda reaction: HNO3 + NaOH ==nano3 + H2O

Decomposition reaction:1. Water decomposes under the action of direct current: 2H2O2H2+O2 Phenomenon: (1) Air bubbles are generated on the electrode. H2:O2=2:1 Produced by the positive electrode'The gas can rekindle the sparkled sticks.

The gas produced by the negative electrode can burn in the air, producing a light blue flame.

2. Heating basic copper carbonate: Cu2 (OH)2CO32CuO+H2O+CO2 phenomenon: the green powder turns black, water droplets are generated on the inner wall of the test tube, and the clarified lime water becomes turbid.

3. Heating potassium chlorate and manganese dioxide to produce oxygen: 2kclo32kcl+3o2 4. Heating potassium permanganate to oxygen: 2kmNO4K2mNO4+MNO2+O2 5. Hydrogen peroxide to produce oxygen in the laboratory

2H2O22H2O+O2 Phenomenon: Bubbles are generated, and the wooden strips with sparks rekindle.

6. Heating mercury oxide: 2Hgo2Hg+O2 red turns silvery white, and generates a gas Lavoisier experiment that rekindles the Martian wood strips.

7. Calcined limestone: CaCO3CaO+CO2 (carbon dioxide industrial method) 8. Carbonic acid is unstable and decomposed: H2CO3===H2O+CO2 phenomenon: litmus test solution turns from red to purple.

9. Thermal decomposition of copper sulfate crystals: CuSO45H2OCUSO4+5H2O

Decomposition reaction 15, laboratory hydrogen peroxide to oxygen: 2H2O2 mNO2 2H2O+ O2

16. Heating potassium permanganate: 2kmNO4 heating K2mNO4 + mNO2 + O2

17. Water is divided into 2h2o energized 2h2 + o2 under the action of direct current

18. Carbonic acid is unstable and divided into H2CO3 ==H2O + CO2

19. High-temperature calcined limestone (carbon dioxide industrial production method): CaCO3 high-temperature CAO+CO2

Neutralization reaction. 48 Hydrochloric acid and caustic soda react: HCl + NaOH ==NaCl + H2O

49.Hydrochloric acid and potassium hydroxide reaction: HCl + KOH ==KCl + H2O

50 Hydrochloric acid and copper hydroxide reaction: 2HCl + Cu(OH)2 ==CuCl2 + 2H2O

51.Hydrochloric acid and calcium hydroxide reaction sail code: 2HCl + Ca(OH)2 ==CaCl2 + 2H2O

52.Hydrochloric acid reacts with ferric hydroxide: 3HCl + Fe(OH)3 ==FeCl3 + 3H2O

53.Aluminum hydroxide drug ** Hyperacidity: 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.Sulfur simple acid and copper 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