Chromate potassium. Diyaarinta kiimikaad iyo jirka. codsiga

chromate potassium ama hromovoloknisty potassium (magaca caalamiga ah: Kalium chromicum, Kaliumchromat, Kaliumpermanganat chromate) - waa xarunta ah imanba, kiristaalo hurdiga ah ee nidaamka orthorhombic, L. biyo. Waxaa loola jeedaa in cusbada ee chromic acid H2CrO4, taas oo gobolka free kajirin. In walax chromate potassium socda formula: CrK2O4

Sida loo helo chromate potassium?

potassium Hromovoloknisty helay siyaabo dhowr ah:

1. By chromium chlorate potassium qayilo xabagta (falcelinta qaadataa meel heerkulka a of 500-700 degrees):

Cr2O3 (xabagta chromium) + KClO3 (chlorate potassium) + K2CO3 (carbonate potassium) = 2K2CrO4 (chromate potassium) + KCl (chloride potassium) + 2CO2 (gaaska acid carbonic)

2. By kala diridda xabagta chromium ee hydroxide potassium :

CrO3 (xabagta chromium) + 2KOH (hydroxide potassium) = K2CrO4 (chromate potassium) + H2O (oo biyo ah)

3. By daatay ee dichromate potassium by kululaynta (reaction waxaa lagu fuliyaa at heerkul ah 500-600 degrees):

4K2Cr2O7 (dichromate potassium) = 4K2CrO4 (chromate potassium) + 2Cr2O3 (xabagta chromium) + 3O2 (oxygen)

4. By gaadhista xal u xoog of hydroxide potassium in dichromate potassium :

K2Cr2O7 (dichromate potassium) + 2KOH (hydroxide potassium) = 2K2CrO4 (chromate potassium) + H2O (oo biyo ah)

5. Nooca macdanta dhif ah oo la yidhaahdo "tarapakait". Waxaa hromovoloknisty daawaha potassium.

Potassium kiimikaad chromate:

1. In acids milo hromovoloknisty potassium galo dichromate potassium, kuwaas oo formula K2Cr2O7. Tusaale waxaa ah falcelinta soo socda:

2K2CrO4 (chromate potassium) + 2HCl (Aashito la badhxay) = K2Cr2O7 (dichromate potassium) + 2KCl (chloride potassium) + H2O (oo biyo ah)

2. In lala acids xoog cadaanyo kala duwan qaadataa meel, tusaale ahaan:

K2CrO4 (chromate potassium) + 2HCl (aashito qaab xoog) K = (CR (cl) O3) (complexed chromium) + KCl (chloride potassium) + H2O (oo biyo ah)

3. In falcelinta la chromate potassium acids urursan guryaha bandhig oksidheeyeyaal kulul. Tusaale ahaan waxaa reaction soo socda waxaa lagu fuliyaa at heerkul ah 90 digrii,

2K2CrO4 (chromate potassium) + 16HCl (Aashito) = 2CrCl3 (chloride chromium) + 3Cl2 (sida gaaska chlorine) + 4KCl (chloride potassium) + 8H2O (oo biyo ah)

4. Hromovoloknisty potassium geli karaan dareen diidmo sarrifka. Tusaale ahaan:

K2CrO4 (chromate potassium) + 2AgNO3 (amooniyam oo lacag ah) = Ag2CrO4 (chromate lacag ah, precipitates) + 2KNO3 (amooniyam potassium)
K2CrO4 (chromate potassium) + Hg2 (NO3) 2 (amooniyam mercury) = Hg2CrO4 (chromate mercury precipitates) + 2KNO3 (amooniyam potassium)

The guryaha jirka ah ee chromate potassium:

1. cufnaanta waa 2,732 / g cm3.
2. chromate Kaliumpermanganat dhalaalayaa at 968,3 ° C. At heerkul ah 668 digrii galo wajiga cas hexagonal - keensataa midab kale - cas. Si kastaba ha ahaatee, ku dul qaboojinta noqday huruud ah mar kale.
3. Foomamka kiristaalo huruud ah nidaamka rhombic.
4. Waxaa iska leh ee P-nam group bannaan.
5. jeedaa paramagnetic ah.
6. L xumo ee ka ethanol, beelaya biyo. L. in khamriga ethyl iyo preservative.
7. mass The gaws waa 194,19 g / mol.

guryaha indhaha of chromate potassium:

index The Refractive of 1.74

Xaggee lagu dabaqi karo chromate potassium?

1. warshadaha meged ahna waxaa loo isticmaalaa sida wakiilka beds ah. In dyeing oo dhar loo isticmaalaa sida mordant ah.
2. Waxa loo isticmaalaa sida qayb ka mid ah Halabuurka elektrolytka ee maaddooyinka kiimikada gaar ah ugu.
3. Sida brightener waayo, wax iyo saliid.
4. In Avv organic sida oxidant ah, tusaale ahaan, wax soo saarka ee formaldehyde.
5. xal potassium Sidoo kale hromovoloknisty loo isticmaalo diyaarinta qayilo electrochemical oo lacag ah, iyo marinka ee alaabta ka copper iyo lacag Alloys.
6. loo isticmaala xal daaweyn laysugu daaweeyo daawo.
7. In laboratories weelka waa isku dar ah ee muda siman of acid xoog sulfuric iyo xal K2Cr2O7, hore cokan dhaxanta.

dichromate potassium (magaca farsamo - Chrompick)

Waxay ka dhigan tahay kiristaalo of midabka cas-orange. No noocyada crystalline, ayaa cufnaanta ah 2,684 garaam halkii centimitir oo saddex jibaaran, dhalaalayaa at 397 digrii. On kulaylinta dheeraad ah decomposes. Milmi biyo at 20 darajo oo waa loo siman yahay si 12,48 garaam oo cusbo per 100 garaam oo biyo ah. dichromate potassium waxaa si balaadhan looga isticmaalaa sida oxidant ah pyrotechnics ah, warshadaha ee ciyaarta, iyo sidii reagent ah hromametrii.