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Anonymous users2024-02-06Cu2+ (the solution of the substance containing it is blue, CuSO4·5H2O is blue crystal, and Cu(OH)2 is blue precipitate);
Fe3+ (the solution of the substance containing it is yellow, and Fe(OH)3 is a reddish-brown precipitate);
Fe2+ (the solution of the substance containing it is green, and Fe(OH)2 is a light green precipitate);
Another: the color of the substance in the junior high school stage:
Fe(OH)3 reddish-brown precipitate; Fe2O3 red (brown) ; Fe2(SO4)3, FeCl3, Fe(NO3)3 solution (i.e., Fe3+ solution) yellow; FeSo4, FeCl2, Fe(No3)2, (i.e., Fe2+) light green; Fe lumps are white, powders are black, and impure are black.
Cu(OH)2 blue precipitate; cuo black ; CuCl2, Cu(NO3)2, CuSO4 solution (i.e., Cu2+ solution) blue; Anhydrous CuSO4 is white; CuSO4 5H2O is blue; CU (purple) red.
BaSO4 and AGCL are white precipitates insoluble in HNO3.
CaCO3 BaCO3 is a white precipitate dissolved in Hno3.
kclo3 white; KCL white; kmno4 purple-black ; MnO2 black ; Cu2(OH)2CO3 green. ）
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Anonymous users2024-02-051. Red solid: copper, iron oxide.
2. Green solid: basic copper carbonate.
3. Blue solid: copper hydroxide, copper sulfate crystals.
4. Purple-black solid: potassium manganate.
5. Light yellow solid: sulfur.
6. Colorless solids: ice, dry ice, diamond.
7. Silver-white solid: silver, iron, magnesium, aluminum, mercury and other metals.
8. Black solid: iron powder, charcoal, copper oxide, manganese dioxide, ferric tetroxide, (carbon black, activated carbon).
9. Reddish-brown solid: iron hydroxide.
10. White solid: sodium chloride, sodium carbonate, sodium hydroxide, calcium hydroxide, calcium carbonate, calcium oxide, copper sulfate, phosphorus pentoxide, magnesium oxide.
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Anonymous users2024-02-041 Red: copper, Cu2O, magenta solution, phenolphthalein in alkaline solution, litmus in acidic solution, liquid bromine (dark brown-red), red phosphorus (dark red), phenol oxidized by air, Fe2O3, (FesCN) 2+ (blood red).
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Anonymous users2024-02-03The white one has eh, you also go 4 HCO3 mglbro 5n you h4 cl white spirit P paraffin.
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Characteristic 1: less content, large effect. >>>More