Write out 10 chemical equations that generate precipitates

CuSO4+2NaOH=Cu(OH)2 +Na2SO4 blue precipitate generation, the upper part is a clear solution Mass conservation law experiment.

Ca(OH)2 + CO2 = CaCO3 + H2O Clarified lime water becomes turbid, apply CO2 inspection and lime mortar to paint the walls.

Ca(HCO3)2δ CaCO3 +H2O+CO2 white precipitation, produces gas that makes the clarified lime water turbid, scale formation. Formation of stalactites.

HCl+AGnO3= AGCL+HNO3 Produces white precipitate, insoluble in dilute nitric acid The principle of testing Cl—.

Ba(OH)2+ H2SO4=BASO4 +2H2O produces a white precipitate, insoluble in dilute nitric acid The principle of testing SO42—.

BaCl2 + H2SO4 = BaSO4 + 2HCl Generate white precipitate, insoluble in dilute nitric acid Test the principle of SO42-.

Ba(NO3)2+H2SO4=BASO4 +2HNO3 Generate white precipitate, insoluble in dilute nitric acid The principle of testing SO42—.

FeCl3+3NaOH = Fe(OH)3 +3NaCl solution fades yellow and has reddish-brown precipitate.

AlCl3+3NaOH = Al(OH)3 +3NaCl has a white precipitate to form.

mgcl2+2naoh = mg(oh)2↓+2nacl

CuCl2+2NaOH = Cu(OH)2 +2NaCl solution fades blue and has a blue precipitate.

CaO+ H2O = Ca(OH)2 white bulk solid becomes powder, quicklime to prepare lime slurry.

Ca(OH)2 + SO2=CASO3 + H2O has a white precipitate to generate in junior high school.

Ca(OH)2+Na2CO3=CaCO3 +2NaOH has a white precipitate to produce industrial caustic soda and a small amount of laboratory caustic soda.

Ba(OH)2+Na2CO3=BaCO3 +2NaOH has a white precipitate to form.

Ca(OH)2+K2CO3=CaCO3 +2koH has a white precipitate to form.

AgNO3+NaCl = AGCl +Na NO3 white precipitate insoluble in dilute nitric acid (similar reaction to other chlorides) It is used to test chloride ions in solutions.

BaCl2 + Na2SO4 = BaSo4 + 2NaCl white does not dissolve in the precipitate of dilute nitric acid (other sulfate-like reactions) It is used to detect sulfate ions.

CaCl2+Na2CO3= CaCO3 +2NaCl has a white precipitate to form.

MgCl2+Ba(OH)2=BaCl2+Mg(OH)2 is formed with a white precipitate.

chemical experiments] common precipitation formation.

Heating the clarified lime water, because the solubility of Ca(OH)2 decreases with increasing temperature, and heating will precipitate Ca(OH)2

The water freezes and forms a solid, but with a physical change.

Muddy water.

Colloidal aggregation and precipitation.

Heating the clarified lime water, because the solubility of Ca(OH)2 decreases with increasing temperature, and heating will precipitate Ca(OH)2

The water freezes and forms a solid, but with a physical change.

You can heat some substances whose solubility decreases with the increase of temperature, or the easiest way is to evaporate the brine, as soon as you evaporate, the water in the brine will disappear, and the salt in it will precipitate, which is a physical change, not a chemical change, because no new substances are produced in the process of change!

In the reaction of acid-base salt solution, if the product is insoluble in water, there will be precipitation.

The main precipitation is: calcium carbonate.

barium carbonate, barium sulfate, silver chloride, silver carbonate, copper carbonate; Iron hydroxide, copper hydroxide, magnesium hydroxide, aluminum hydroxide, etc. If there is a mixture of these substances or essentia in the slippery mass in the solution, there will be precipitation formation. In addition, calcium hydroxide, barium hydroxide solution with carbon dioxide.

The reaction also has a precipitate formation.

The chemical equation for generating the precipitate is given below:

1. CuSO4+2NaOH=Cu(OH)2+NazSO4, blue Yuqing precipitate generation, and the upper part is the law of conservation of mass of the clear solution.

2. Ca(OH)2+COZ= CACO:L+H, clarified lime water change Apply CO inspection and lime mortar to paint the wall.

3. Ca(HCO3)2=CAC3L+H+CO21, white precipitation produces gas that makes the clarified lime water muddy in front of the town, and scale forms the formation of stalactites.

4. HCI + AGNO = AGCIL + HNO, which generates white precipitate and does not dissolve in dilute nitric acid The principle of testing CI-.

5. Ba(OH)2+ HSO4=BASO4L+2HO, which generates white precipitate and does not dissolve in dilute nitric acid to test the principle of SO2.

6. BaclZ + HSO4 = BaSO4 + 2HCI, which generates white precipitate and does not dissolve in dilute nitric acid The principle of testing SO42-.

7. BA(N03)+HSOA=BASOA+2HNO, which generates white precipitate and is insoluble in dilute nitric acid The principle of testing SO2-.

8. FeCl3+3NaOH = Fe(OH)3+3Naci, the yellow color of the solution fades, and there is a reddish-brown precipitate generated.

9. AICl3+3NaOH = AI(OH)L+3Naci, with white precipitate.

10. Ca(OH)2+KC3=CaCO3L +2KOH, with white precipitate.

11. CuClZ + 2NaOH = Cu (OH) 2L + 2Naci, the solution is blue and has blue precipitate.

12. CaO+ Ho = Ca(OH)2, the white lumpy solid becomes powder, and quicklime prepares lime slurry.

13. Ca(OH)2+SO2=CaSO3L+ HO, there is a white precipitate to generate junior high school.

14. Ca(OH)2+NazCO3=CaCO3L+2NaOH, with white precipitate to generate industrial caustic soda and a small amount of laboratory caustic soda.

15. BA(OH)2+NazCO3=BAC3L+2NaOH, with white precipitate.

Summary. If the chemical ion equation produces two precipitates, then we can write both of the precipitates, and then they can write the ionic formula for the reactants. 

For example, if the chemical ion equation produces two precipitates in the source fruit, then we can write both the precipitates, and then they can write the ionic formula for the reactants. 

Okay, I see, thank you, teacher.

You're welcome, don't forget to give the teacher a thumbs up, dear

Teacher, I would also like to ask how to solve a mathematically problem with an absolute value.

Send it over, I can help you take a look, but I'm not sure it will be solved Sorry teacher, I just learned it in my first year of high school this year, and I don't know much about these professional terms, so please tell me about it in detail.

Haven't learned derivatives yet? I'll take a simpler approach

Okay, trouble.

Okay, I see, thank you, teacher.

Okay, I think this question is still the easiest to derive

chemical experiments] common precipitation formation.

Look at special anions and cations, some cations can react with some anions to form precipitate, potassium, sodium, ammonium salt, nitrate must be soluble, barium sulfate in sulfate is insoluble, carbonate is basically insoluble, and silver chloride in hydrochloride is insoluble.

It is judged by the solubility of acids, alkalis, and salts.

Then it depends on whether there is a descending arrow in the equation.

It is important to memorize which ions combine to form staples.