Potasiuma chromate. E hoomakaukau ai no Nine Inch a me ka physical waiwai. palapala noi

potasiuma chromate ole potasiuma hromovoloknisty (lahui inoa: Kalium chromicum, Kaliumchromat, potasiuma chromate) - mea he'okanikaʻole hui, melemele nā pōaka o ka orthorhombic'ōnaehana, wailana i loko o ka wai. Ua pili ia i paʻakai o chromicʻakika H2CrO4, i loko o ka noa moku'āina hakuʻole. Ma ka waiwai potasiuma chromate kēia haʻilula: CrK2O4

Pehea e kiʻi potasiuma chromate?

Hromovoloknisty potasiuma i loaa i loko o kekahi mau aoao:

1. By chromium'okesaside'okesaside potasiuma chlorate (ka naoh i wahi i ka wela o 500-700 degere):

Cr2O3 (chromium'okesaside) + KClO3 (potasiuma chlorate) + K2CO3 (potasiuma kalepona) = 2K2CrO4 (potasiuma chromate) + KCl (potasiuma koloriside) + 2CO2 (carbonicʻakika kinoea)

2. ka mea hoʻoheheʻeʻia i ka chromium'okesaside ma ka potasiuma hydroxide :

CrO3 (chromium'okesaside) + 2KOH (potasiuma hydroxide) = K2CrO4 (potasiuma chromate) + H2O (ka wai)

3. Ma decomposition o potasiuma dichromate ma ka paio hahana maoli nō (naoh ua lawe mai i ka wela o 500-600 degere):

4K2Cr2O7 (potasiuma dichromate) = 4K2CrO4 (potasiuma chromate) + 2Cr2O3 (chromium'okesaside) + 3O2 (oxygen)

4. Ma ka waiū a hiki i ke kiaʻana i kāna kākoʻo pāʻoihana o ke potasiuma hydroxide e potasiuma dichromate :

K2Cr2O7 (potasiuma dichromate) + 2KOH (potasiuma hydroxide) = 2K2CrO4 (potasiuma chromate) + H2O (ka wai)

5. Ke ano o ka mea pohihihi keia mea pōhaku i kapaia o "tarapakait". Ua hromovoloknisty potasiuma oka a pau.

Potasiuma chromate Nine Inch ka waiwai:

1. Ma dilute nāʻakika hromovoloknisty potasiuma komo potasiuma dichromate, kona haʻilula K2Cr2O7. Lakou i mea hoike o na kēia NaI:

2K2CrO4 (potasiuma chromate) + 2HCl (hydrochloricʻakika nāu kekahi) = K2Cr2O7 (potasiuma dichromate) + 2KCl (potasiuma koloriside) + H2O (ka wai)

2. Ma ka huipūʻana me nāʻakika ikaika i kaʻokoʻa naoh i wahi, no kekahi laʻana:

K2CrO4 (potasiuma chromate) + 2HCl (hydrochloricʻakika i kiaʻana i kāna palapala) K = (Cr (Cl) O3) (? Eiiieaena chromium) + KCl (potasiuma koloriside) + H2O (ka wai)

3. Ma ka naoh me ka potasiuma chromate wela i kia nāʻakika hōʻike nō ia o oxidizing waiwai. He kumu hoohalike ua na kēia naoh ua lawe mai i ka wela o ka 90 degere.

2K2CrO4 (potasiuma chromate) + 16HCl (hydrochloricʻakika) = 2CrCl3 (chromium koloriside) + 3Cl2 (me chlorine kinoea) + 4KCl (potasiuma koloriside) + 8H2O (ka wai)

4. Hromovoloknisty potasiuma e komo i loko o mail reactions. No kekahi laʻana:

K2CrO4 (potasiuma chromate) + 2AgNO3 (kālā nitrate) = Ag2CrO4 (kālā chromate, precipitates) + 2KNO3 (potasiuma nitrate)
K2CrO4 (potasiuma chromate) + Hg2 (NO3) 2 (Mercury nitrate) = Hg2CrO4 (Mercury chromate precipitates) + 2KNO3 (potasiuma nitrate)

Ke physical waiwai o ka potasiuma chromate:

1. ka pa apŘ He 2,732 g. / Cm3.
2. potasiuma chromate heheʻe ma 968,3 ° C. I ka wela o ka 668 degere komo i kaʻulaʻula, hexagonal pae - loaʻa iā ia kekahi i kekahi waihoʻoluʻu -ʻulaʻula. Eia naʻe, ma luna o ka huʻihuʻiʻana lilo yellow hou.
3. Hoʻopihapiha yellow nā pōaka rhombic kahua.
4. Ua no a hiki i ka makahiki pūʻulu P-Nam.
5. pili ia i ka paramagnetic.
6. ilihune wailana ma ka ethanol, insoluble i loko o ka wai. Wailana ma ka'eto ka waiʻona a me ka diethyl.
7. ka molar nuipa mea 194,19 g. / Mol.

'ōnohi waiwai o ka potasiuma chromate:

Ke refractive Index o 1,74

Where pili potasiuma chromate?

1. kaʻili hana ua hoʻohana 'ia e like me ka tanning hope paha. Ma dyeing o fabrics hoʻohana like me ka mordant.
2. Ua Ua hoʻohana 'ia e like me ka ke keʻena o ka electrolyte haku mele' ana o kekahi kūikawā Nine Inch degreasing.
3. I brightener no ka mahuahua a me ka aila.
4. Ma ke aloha hoʻololi kemikala me he oxidant, no ka mea hoike, i loko o ka? Iecaianoaaiiie o ka make.
5. A hromovoloknisty potasiuma pāʻoihana i hoʻohana no ka makaukau o ka electrochemical'okesaside o ke kala, a no ka hooholo ia ana o huahana mai keleawe a me ke kala oka a pau.
6. hoʻohana like me ka homeopathic laau i ka laau lapaau.
7. Ma keʻena hoʻokolohua dishwashing mea i ka läÿau, o like puke o kia sulfuricʻakika a me K2Cr2O7 pāʻoihana, mua paʻa kūhohonu loa i loko o ke anu.

Potasiuma dichromate (ka oaoieei-inoa - Chrompick)

Ua ho nā pōaka oʻulaʻula-ʻalani waihoʻoluʻu. No mea pōaka ano, i ka pa apŘ o 2,684 gram no cubic kenimika, heheʻe ma ka 397 degere. Ma hou paio hahana maoli nō decomposes. Solubility i loko o ka wai ma ka 20 degere mea like i 12,48 nā huna o ka paʻakai no 100 nā huna o ka wai. Potasiuma dichromate ua hoʻomano hoʻohana me ka oxidant i loko o ka pyrotechnics, ke ń hana, a me ka mea kemikala ma ka hromametrii.