Calcium oxide. Iipropati Physical, thermal kunye imichiza. Isicelo.

Oksayidi - a crystalline compound emhlophe. Amanye amagama le nto - quicklime, calcium oxide, "Killer Bee", "quicklime". Oksayidi kabani ifomula cao, yaye imveliso yalo asabela ngamanzi (H2O) - Ca (OH) 2 ( "pushonka" okanye islaked) baye bafumana isicelo ngokubanzi kurhwebo yokwakha.

Indlela ukufumana calcium oxide?

1. Inkqubo Industrial soqulunqo ukwimo lowo ukwandiswa lwelimestone thermal (phantsi ubushushu) (calcium carbonate) :

CaCO3 (lime) = cao (calcium oxide) + CO2 (carbon dioxide)

2. Calcium oksayidi kwakhona eziqulunqwe ngokuhlanganisa izinto ezilula:

2Ca (calcium) + O2 (oksijini) = 2CaO (calcium oxide)

3. Indlela yesithathu ukuvelisa calcium oxide yokubola thermal ngecalcium hayidroksayidi (Ca (OH) 2) kunye calcium neetyuwa ze asidi eziliqela ioksijini-aqulethe:

2Ca (NO3) 2 (calcium nitrate) = 2CaO (into ephuma) + 4NO2 (nitrogen oxide) + O2 (oksijini)

Iipropati Physical of calcium oxide

1. Inkangeleko: ambaxa crystalline of umbala omhlophe. Chwetheza acacisa sodium chloride (NaCl) ebusweni ukuzikhathalela cubic akhazimlayo ngekroba.

2. ubunzima izinyo ka-55,07 grams / nolovane.

3. Le konga 3.3 g / santimetr³.

Iipropati thermal calcium oxide

1. Iqondo lobushushu yokunyibilika Iqondo lobushushu lihle laya 2570

2. Le lokubila degrees 2850

3. I-izinyo umthamo ubushushu (at iimeko standard) yi 42,06 J / (Mol · K)

4. enthalpy wesiseko (phantsi kweemeko standard) ye -635 kJ / Mol

Iimpawu lwemichiza calcium oxide

Calcium oxide (cao ifomyula) - yinto oxide esisiseko. Ngoko ke, ungakwazi:

- enyibilikayo emanzini (H2O) kunye ukukhululwa amandla. Oku kwenza calcium hayidroksayidi. Le ndlela ngolu hlobo lulandelayo:

Cao (calcium oxide) + H2O (amanzi) = Ca (OH) 2 (calcium hayidroksayidi) + 63.7 kJ / Mol;

- ukuxubana asidi kunye oxides acid. Kulo ifomu ityuwa. Nantsi eminye imizekelo yendlela:

Cao (calcium oxide) + SO2 (sulphur dioxide) = CaSO3 (calcium sulfite)

Cao (calcium oxide) + 2HCl (zehydrochloric acid) = CaCl2 (calcium chloride) + H2O (amanzi).

Ukusetyenziswa calcium oxide:

1. Le miqulu eziphambili phambi kwethu izinto ezisetyenziswa kwimveliso dust ngezitena ekwakhiweni. Ngaphambili, ikalika elinyukayo owawusetyenziswa lime lwesamente. Yakhe walungisa esitiyeni kuyo amanzi (H2O). I-calcium oksayidi ngenxa nje ocande hayidroksayidi Khawutsho ke, ngokuvimba esesibhakabhakeni ikharbon dayokhsayidi (CO2), kakhulu lukhuni, ajike abe calcium carbonate (CaCO3). Nangona ixabiso eliphantsi kwale ndlela, ngoku kwekalika isamente phantse akaze asetyenziswe ekwakheni, njengoko unawo amandla okutsala kakuhle bandisa ulwelo.

2. impahla eliyinjubaqa Njengoko calcia efanelekileyo njengento angabizi yaye zifumaneka lula. Tho calcium oksayidi umntu amelane amanzi (H2O), ukuvumela ukusetyenziswa kwayo elinjubaqa, apho ukusetyenziswa izinto zexabiso usebenze.

3. Xa kwiilebhu lokusetyenziswa Eliyintloko oksayidi okusula lunezinto musa kusabela kuyo.

4. Kushishino yokutya iziyobisi ubhalisiwe njenge additive ukutya phantsi E 529. uphawulo isetyenziswa njengento emulsifier kulwenziwo ngomxube yohlobo olunye of non-miscible kunye nezinye izinto ngalinye - amanzi, i-oyile kunye grease.

5. Kushishino oksayidi isetyenziswa ukususa sulphur dioxide (SO2) ukusuka neegesi flue. Used idla isisombululo amanzi 15%. Ngenxa indlela ukusebenzisana apho ikalika hydrated kunye sulphur dioxide, gypsum wafumana CaCO4 kunye CaCO3. Kule amalinge, abaphandi bafuna isibonisi ngo-98% umsi otchistki ngayo sulphur dioxide.

6. Used in ezizodwa "samogreyuscheysya 'izitya. Kwenqanawa omncinci ngecalcium oxide zilahlwa phakathi kweendonga zombini inqanawa. Xa zihlaba philisi kwi indlela emanzini luqala ukukhululwa ubushushu ethile.