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Anonymous users2024-02-10CuSO4+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 test and lime mortar to paint the walls Ca(HCO3)2δ CaCO3 +H2O+CO2 White precipitation, produce gas that makes the clarified lime water turbid Scale formation. The formation of stalactites HCl+AGnO3= AGCL +HNO3 produces a 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 produces a white precipitate, insoluble in dilute nitric acid The principle of testing SO42—BA(NO3)2+H2SO4=BASO4+2Hno3 produces white precipitate, insoluble in dilute nitric acid Principle of testing SO42—FeCl3+3NaOH=Fe(OH)3 +3NaCl solution yellow fades, and there is reddish-brown precipitate to form AlCl3+3NaOH=Al(OH)3 +3NaCl has a white precipitate to produce MgCl2+2NaOH = mg(OH)2 +2NaCl CuCl2+2NaOH = Cu(Oh)2 +2NaCl The solution fades blue and has a blue precipitate CaO+ H2O = Ca(OH)2 White bulk solid becomes powder, quicklime prepares lime slurry Ca(OH)2+SO2=CaSO3 + H2O has white precipitate generation Junior high school generally does not use Ca(OH)2+Na2CO3=CaCO3 +2NaOH There is a white precipitate to produce Industrial caustic soda, a small amount of laboratory caustic soda Ba(OH)2+Na2CO3=BACO3 +2NaOH There is a white precipitate to generate Ca(OH)2+K2CO3=CaCO3 +2KOH has a white precipitate to form AgNO3 + NaCl = AGCL +Na No3 White insoluble precipitate of dilute nitric acid (similar reaction of other chlorides) Used to test chloride ions in solution BaCl2 + Na2SO4 = Baso4 +2NaCl White insoluble precipitate of dilute nitric acid (other sulfate similar reactions) Used to test 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.
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Anonymous users2024-02-09Chemical halo is still eaten by bar
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Anonymous users2024-02-081. Common precipitation and color in high school chemistry.
2. Common precipitation and color in high school chemistry.
3. Color table of common precipitation in high school chemistry.
4. Common precipitation and color in junior high school chemistry.
5. The color of various precipitations in chemistry.
6. High chemical precipitation color.
1.The common precipitates and colors in high schools are as follows: red precipitates: copper, cuprous oxide, red phosphorus, ferric oxide, iron hydroxide.
2.Yellow precipitate: phosphorylated silver, sulfur, sodium peroxide, silver bromide.
3.Blue precipitate: blue alum, copper hydroxide.
4.Green precipitation: alum, basic copper carbonate.
5.Black precipitate: cuprous oxide, manganese dioxide, ferrous sulfide, ferrous oxide, ferric oxide, toner, iron persulfide, cuprous sulfide, copper sulfide, lead sulfide, silver sulfide, silver oxide.
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Anonymous users2024-02-07Yellow: AGI, bromine water (yellow-orange), Fes2, nitric acid for some proteins.
Light yellow: S, Na2O2, TNT (trinitrotoluene), AGBR
Brownish-yellow: FeCl3 solution, iodine water (dark yellow-brown).
Black: Cus, Ag2S, Cu2S, Fes, FeO, Fe3O4, Mno2, Cuo, AG2O, I2 (violet-black), Si (gray-black), C, Ag, KMNO4 (purple-black).
Green: CuCl2 solution, Cu2(OH)2CO3, FeSO4 7H2O (light green), F2 (light yellow-green), Cl2 (yellow-green), chlorine water (light yellow-green).
Red: Cuo, Cu, Fe(SCN)2+, methyl orange in acidic environment, purple litmus test solution in acidic environment, phenolphthalein in alkaline environment, magenta test solution, red phosphorus (dark red), BR2 (dark red brown), BR2 in CCL4 solution (purple red), phenol oxidized by air (pink).
Brown: solid FeCl3, solid CuCl2 No2 (reddish brown), Fe2O3 (reddish brown).
Purple: KMno4 solution, I2 in CCL4 solution.
Brown: Fe(OH)3 (reddish-brown).
Blue: CuSO4 5H2O, Cu(OH)2, starch meets iodine, purple litmus solution in alkaline environment, Cu2+ dilute solution.
The color reaction produces a precipitate that has a color.
Reddish-brown flocculent precipitate: Fe(OH)3
Light green precipitate: Fe(OH)2
Blue flocculent precipitate: Cu(OH)2
White precipitate: CaCO3, BaCO3, AGCL, BaSO4, (where BaSO4, AGCL are white precipitates insoluble in Hno3, CaCO3 BaCO3 is a white precipitate dissolved in Hno3), mg(OH)2
Pale yellow precipitate (in aqueous solution) --s
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Anonymous users2024-02-06Inorganics containing Cu ions are blue.
The inorganic salts of Fe ions are yellow Special: Fe(OH)3 (reddish-brown precipitate) Fe3O4 black solid.
When sulfate ions and silver ions or mercury ions are together, they are white precipitates, and carbonate ions are white precipitates when they are combined with BA and CA.
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Anonymous users2024-02-05Calcium carbonate (white precipitate), Fe(OH)3 (reddish-brown precipitate), Cu(OH)2 (blue precipitate).
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