Dichromate potaziyamu

Mankhwala potaziyamu dichromate ali maina angapo, zomwe akanayesetsa wamkulu kapena wamng'ono wa pafupipafupi, ntchito malingana ndi munda wa ntchito wa chinthu yokha. Pachikhalidwe, chiphunzitso mankhwala zofala kwambiri ntchito dzina dichromate potaziyamu kapena potaziyamu Chrompick. Pankhani ntchito mafakitale, koma pawiri izi ukutchedwa Chrompick. Nkofunika kumvetsa zimene chimodzimodzi mtundu wa kulumikizana mu funso, chifukwa ntchito tsiku ndi tsiku Chrompick amatchedwanso ndi sodium dichromate chilinganizo Na2Cr2O7 * 2H2O. Chemical chilinganizo potaziyamu bichromate - K2Cr2O7.

The thupi katundu wa bichromate potaziyamu zotsatirazi. Kunja, mankhwala ndi lalanje-akuda timibulu, Krustalo latisi amene ali variable mchikakamizo cha kutentha. Pamene kufunika kwake kwa 257 ° C triclinic latisi ali mawonekedwe timibulu umodzi, ndipo pamene kutentha limatuluka pamwamba 257 ° C, icho chimasintha ndi mawonekedwe monoclinic.

Potaziyamu dichromate mankhwala ali limatsogolera kutentha kwa 396 ° C, ndi kuwonjezeka pamwamba 500 ° C linawola mankhwala pa K2CrO4, Cr2O3 ndi oxygen. Potaziyamu bichromate Specific yokoka ndi 2,69 g / cm3. Potaziyamu dichromate kwambiri sungunuka njira amadzimadzi:

- pa kutentha 0 ° C, magalamu 100 a madzi kwathunthu kotero magalamu 4.6 wa bichromate potaziyamu;

- pa kutentha 25 ° C, kuchuluka womwewo wa madzi akhoza kwathunthu kusungunuka kale magalamu 15,1, ndi kutentha liukitsidwa 50 ° C - ndi magalamu 37,7.

Mu alcohols, mwachitsanzo, Mowa, potaziyamu dichromate pang'ono sungunuka.

Potaziyamu bichromate ndipamene eutectic - gulu madzi njira yomwe crystallizes pansi kutentha laling'ono kwa gulu ili la zinthu amapanga compositional chilinganizo chimene - H2O - K2Cr2O7 ndi potaziyamu bichromate zili 4,30% ndi kulemera. Limatsogolera kutentha pawiri izi 0,63 yekha ° C ndi otentha pa 104,8 ° C (bichromate potaziyamu mu njira - 52% ndi kulemera).

C yokhudza zinthu monga dichromate potassium zochita chichitike pa TV acidic, ngati muli amadzimadzi njira. Mankhwala yokha ndi wamphamvu oxidizing wothandizira, mwachitsanzo, ndi zimene bichromate potaziyamu ndi sulfure analandira K2SO4 mchere ndi chromium okusayidi.

Mwa kuchita ndi zidulo potaziyamu bichromate polihromaty mitundu sulfuric ndi nitric. Pamene Kutentha zosakaniza munali izi pawiri ndi wa hydrogen peroxide analandira mosavuta zachiwawa timibulu peroxide amene nawonso, ndi zofunika chigawo cha mabomba.

M'mafakitale potaziyamu bichromate kukonzekera ikuchitika mwa kuwombola anachita ndi Na2Cr2O7 KCl, limene yankho mkangano kutentha yaikulu - za 1000 - 1300 ° C.

Potaziyamu dichromate ntchito, katundu mankhwala amene tawatchula pamwambawa mu kupanga utoto zosiyanasiyana mafakitale nsalu ndi chikopa, kuti ntchito pofufuta zikopa. Kugawira ntchito mu processing mitengo ndi kupanga machesi, kupanga pyrotechnic zosakaniza zithunzi. Ngati potaziyamu potaziyamu bichromate kusungunuka chidulo cha safuriki, likupereka yankho othandiza kwambiri zida kutsuka galasi zasayansi. Monga mbali ya bichromate potaziyamu potaziyamu ntchito electrolytes youma komanso zitsulo ndondomeko dzimbiri woletsa zitsulo ndi kasakaniza wazitsulo awo.

Chrompick potaziyamu - ndi pawiri poizoni kwambiri. Madontho njira zace, kugwa pa malo poyera za thupi, kuwononga khungu. Ngakhale woipa ka mankhwala kungachititse kuti mundawo kupuma ndi kuwononga chichereŵechereŵe mitsempha minofu. Mumadziwika milandu vuto la impso, chiwindi ndi kapepala m'mimba. Choncho, ulimi wa ntchito ndi dichromate potaziyamu ayenera mosamalitsa kugwiritsa tipewe ngozi. Makamaka ayenera kusamalira kuteteza dongosolo kupuma ndi khungu.