Chromate potassium. Sauniuniga o meatotino vailaau ma le faaletino. talosaga

potassium chromate po hromovoloknisty potassium (igoa faava o malo: Kalium chromicum, Kaliumchromat, Potassium chromate) - o se lotoa inorganic, taʻega tioata lanu samasama o le faiga orthorhombic, soluble i le vai. E faasino i le masima o acid chromic H2CrO4, e le oi ai lea i le setete saoloto. I mea chromate potassium nei fuafaatatau: CrK2O4

Auala e maua ai chromate potassium?

potassium Hromovoloknisty maua i le tele o auala:

1. O le chlorate potassium oxidation oxide chromium (o tali e faia i se vevela o le 500-700 tikeri):

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

2. E ala i le faataapeina o le oxide chromium i hydroxide potassium :

CrO3 (chromium oxide) + 2KOH (hydroxide potassium) = K2CrO4 (chromate potassium) + H2O (le vai)

3. E ala i le decomposition o potassium dichromate e faʻavevela (tali ua faia i se vevela o le 500-600 tikeri):

4K2Cr2O7 (potassium dichromate) = 4K2CrO4 (chromate potassium) + 2Cr2O3 (oxide chromium) + 3O2 (okesene)

4. O le aafia i se fofo faasagatonu o hydroxide potassium e potassium dichromate :

K2Cr2O7 (potassium dichromate) + 2KOH (hydroxide potassium) = 2K2CrO4 (chromate potassium) + H2O (le vai)

5. O le natura o le minerale e seāseā tupu, o loo taʻua "tarapakait". E hromovoloknisty uʻamea filogia potassium.

Potassium meatotino vailaau chromate:

1. I potassium hromovoloknisty acids faavaivaia ulufale dichromate potassium, o lona fua faatatau K2Cr2O7. O se faataitaiga o le tali lenei:

2K2CrO4 (potassium chromate) + 2HCl (acid hydrochloric faavaivaia) = K2Cr2O7 (potassium dichromate) + 2KCl (chloride potassium) + H2O (le vai)

2. I le galulue faatasi ai ma acids malosi maua se tali eseese e faia, mo se faataitaiga:

K2CrO4 (potassium chromate) + 2HCl (acid hydrochloric i se faiga faasagatonu) K = (CR (mata) O3) (complexed chromium) + KCl (chloride potassium) + H2O (le vai)

3. I le tali i potassium chromate vevela acids taulai faaaliga meatotino oxidizing. O se faataitaiga o loo ua faia le gaoioiga e sosoo ai i se vevela o le 90 tikeri:

2K2CrO4 (potassium chromate) + 16HCl (acid hydrochloric) = 2CrCl3 (chloride chromium) + 3Cl2 (e pei kasa chlorine) + 4KCl (chloride potassium) + 8H2O (le vai)

4. potassium Hromovoloknisty e mafai ona ulu atu i tali fesuiaiga. Mo se faataitaiga:

K2CrO4 (potassium chromate) + 2AgNO3 (nitrate ario) = Ag2CrO4 (chromate ario, precipitates) + 2KNO3 (nitrate potassium)
K2CrO4 (potassium chromate) + Hg2 (NO3) 2 (mercury nitrate) = Hg2CrO4 (mercury chromate precipitates) + 2KNO3 (nitrate potassium)

Le meatotino faaletino o chromate potassium:

1. O le density o 2,732 g cm3 /.
2. Potassium chromate melts i 968,3 ° C. I se vevela o le 668 tikeri ulufale le vaega hexagonal mumu - maua se isi lanu - mumu. Ae peitai, i luga o lea na toe samasama cooling.
3. Pepa taʻega tioata lanu samasama faiga rhombic.
4. E faatatau i le vaega avanoa P-Nam.
5. faatatau i le paramagnetic.
6. soluble Matitiva i ethanol, insoluble i le vai. Soluble i ethyl ava malosi ma diethyl.
7. O le vaega tele gao o 194,19 g / mol.

meatotino opitika o chromate potassium:

Le faasino upu refractive o 1,74

Afai chromate potassium talafeagai?

1. E faaaoga e le alamanuia paʻu o se sui sooupu tanning. I dyeing o ie faaaogaina o se mordant.
2. O le faaaogaina o se vaega o le tuufaatasiga electrolyte o se degreasing vailaau faapitoa.
3. A brightener mo solo ma le suauu.
4. I le tuufaatasia faatulagaina o se oxidant, mo se faataitaiga, i le tuuina atu o dyes.
5. foi fofo potassium hromovoloknisty faaaoga mo sauniuniga o electrochemical oxidation o ario, ma mo fuaitau o oloa mai alloys apamemea ma le ario.
6. faaaogaina o se vaifofo homeopathic i vailaau faafomai.
7. I suʻesuʻega fufulu ipu o se tuufaatasiga o tusi tutusa o acid sulfuric faasagatonu ma fofo K2Cr2O7, talu ai ua faatumulia i le malulu.

dichromate Potassium (o le igoa faapitoa - Chrompick)

E faatusa taʻega tioata o lanu mumu-lanu moli. E leai se ituaiga crystalline, ei ai se density o 2,684 polokalama i le kupita senitimita, melts i le 397 tikeri. I nisi faʻavevela decomposes. Solubility i le vai i le 20 tikeri e tutusa ma le 12,48 kalama o le masima i le 100 kalama o le vai. Potassium dichromate o loo faaaogaina faalauaitele o se oxidant i le pyrotechnics, o le alamanuia afitusi, ma o se reagent i hromametrii.