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Anonymous users2024-02-06Cholelum CuSO4·5H2O, Green Alum FeSO4·7H2O, Alum KAL(SO4)2·12H2O, Haolu ZNSO4·7H2O
This is the main alum learned in high school chemistry. In addition, there are raw gypsum caso4·2h2o, cooked gypsum 2caso4·h2o, and miscanthus na2so4·10h2o, which are also crystalline hydrates, but not alum.
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Anonymous users2024-02-05FeSO4·7H2O alum, alum, alum, ZnSO4·7H2O alum, KAL(SO4)2·12H2O alum, CuSO4·5H2O alum, blue alum, or stone gall. Hope satisfied.
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Anonymous users2024-02-041. Cholelum: the molecular formula is CuSO4·5H2O, aliases: stone gall, blue alum. This product is a crystal of sulfate mineral bililum, or an artificially made hydrous copper sulfate, which is mainly produced in Yunnan and Shanxi.
2. Green alum: the molecular formula is Feso4·7H2O, which is used in the manufacture of iron salts, inks, iron oxide red and indigo, and is used as mordant, tanning agent, water purification agent, wood preservative and disinfectant, etc.; It is used as a fertilizer, herbicide and pesticide in agriculture.
3. Alum: the molecular formula is kal(SO4)2·12H2O, also known as: alum, potassium alum, potassium alum, colorless cubic crystal, the appearance is often octahedral, or with the cube, rhombic dodecahedron to form a polyshape, sometimes attached to the container wall and resembles a hexagonal plate, with glass luster.
It has antibacterial effect, astringent effect, etc., and can be used as traditional Chinese medicine. Alum can also be used to prepare aluminum salts, baking powders, paints, tanning materials, clarifiers, mordants, papermaking, waterproofing agents, etc., and are often used for water purification in our lives.
4. Haolu: The molecular formula is ZNSO4·7H2O, which is a toxic chemical, the scientific name is zinc sulfate heptahydrate, which is a colorless crystal, often used as an astringent, preservative, and pigment.
5. Alum: the molecular formula is KCR(SO4)2·12H2O, purple or violet-red equiaxed octahedral crystal. Soluble in water, dilute acid.
Insoluble in alcohol. It is a purple-red aqueous solution when dissolved in water, turns into a green solution when heated to 70, and gradually turns purple after cooling.
6. Alum: The molecular formula is K2CRO7·2H20, and alumum is an orange-red crystal, soluble in water, and is a strong oxidant. After the concentrated solution is added to the concentrated sulfuric acid, the chromic acid washing solution commonly used in the laboratory is obtained.
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Anonymous users2024-02-03Cholelum CuSO4·5H2O, Green Alum FeSO4·7H2O, Alum KAL(SO4)2·12H2O, Haolu ZNSO4·7H2O
This is the main alum that the first school of high school has learned. In addition, there are raw gypsum caso4·2h2o, cooked gypsum 2caso4·h2o, and miscanthus na2so4·10h2o, which are also crystalline hydrates per mu, but not alum.
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Anonymous users2024-02-02FeSO4·7H2O alum, alum, alum, ZnSO4·7H2O alum, KAL(SO4)2·12H2O alum, CuSO4·5H2O alum, blue alum, or stone gall. Hope satisfied.
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Anonymous users2024-02-01Alum: sulfates of various metals (e.g., copper, iron, zinc), especially hydrates of this sulfate with a vitreous surface or luster.
Feso4·7H2O: alum, alum, alum.
CuSO4·5H2O: Cholelum, blue alum, stone gall.
ZNSO4·7H2O: Hao.
KAL(SO4)2·12H2O: alum, alum.
Fe2O3·2SO3·10H2O: Alum.
KCR(SO4)2·12H2O: alum, chromium potassium alum, chromium alum.
NH4Fe(SO4)2·12H2O: ammonium iron.
But there are also those that are not sulfates but are also called alum, for example: K2Cr2O7 is called Hongfan. However, in ancient times, red alum did not refer to potassium dichromate, but letter stone, that is, arsenic, which is often mentioned in **.
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Anonymous users2024-01-31Common in high school:
Feso4·7H2O: Alum.
CuSO4·5H2O: Cholelum, blue alum.
kal(SO4)2·12H2O: alum.
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Anonymous users2024-01-30Cholelum, alum, pentoxide.
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Anonymous users2024-01-29Alum, potassium aluminum sulfate dodecahydrate, kal(SO4)2·12H2O, green alum, FeSO4·7H2O, bile alum, copper sulfate pentahydrate, CuSO·5HO, Miscanthus Sodium sulfate decahydrate, Na2SO4·10H2O, chromium potassium alum, KCR(SO4)2-12H2O ammonium iron, ammonium iron sulfate (NH4)2SO4·FE2(SO4)3·24H2O or NH4Fe(SO4)2·12H2O
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