Cov tshuaj tiv thaiv dab tsi yog calcium carbonate calcium oxide carbon dioxide?
Cov tshuaj tiv thaiv dab tsi yog calcium carbonate calcium oxide carbon dioxide?

Video: Cov tshuaj tiv thaiv dab tsi yog calcium carbonate calcium oxide carbon dioxide?

Video: Cov tshuaj tiv thaiv dab tsi yog calcium carbonate calcium oxide carbon dioxide?
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Calcium carbonate yog ua kom sov kom txog thaum nws nkag mus rau hauv thermal decomposition tsim cov calcium oxide thiab carbon dioxide. Cov calcium oxide (unslaked txiv qaub) yog yaj hauv dej tsim calcium hydroxide (limewater). Bubbling carbon dioxide los ntawm qhov no ua ib qho kev ncua ntawm calcium carbonate.

Yog li, hom tshuaj tiv thaiv dab tsi yog calcium oxide thiab carbon dioxide?

Calcium oxide yog ib tug dawb crystalline khoom nrog ib tug melting point ntawm 2572 ° C. Nws yog tsim los ntawm cua sov limestone, coral, hiav txwv shells, los yog chalk, uas yog tsuas yog CaCO3, tsav tawm. carbon dioxide . Qhov no tshuaj tiv thaiv yog thim rov qab; calcium oxide yuav teb nrog carbon dioxide ua form calcium carbonate.

Tsis tas li ntawd, yuav ua li cas thaum calcium carbonate reacts nrog carbon dioxide? Calcium carbonate react nrog carbon dioxide thiab dej los tsim calcium hydrogen carbonate . Cov tshuaj tiv thaiv ua tiav ntawm chav tsev kub.

Ntxiv mus, hom tshuaj tiv thaiv dab tsi yog CaCO3 CaO co2?

DECOMPOSITION : AB → A + B Piv txwv: 2 H2O → 2 H2 + O2 CaCO3 → CaO + CO2 Decompositions feem ntau yog qhov sib txawv (rov qab) ntawm kev sib xyaw ua ke, thiab lawv feem ntau koom nrog oxidation thiab txo qis (tab sis tsis nyob hauv qhov piv txwv kawg).

Thaum koj kub calcium carbonate ib qho khoom dawb nrog cov mis CaCO3 nws tawg mus rau hauv cov khoom calcium oxide CaO thiab carbon dioxide gas co2?

Thermal decomposition Thaum cua sov 840 ° C, calcium carbonate decomposes, tso tawm cov pa roj carbon dioxide thiab tawm hauv qab calcium oxide -a dawb khoom . Calcium oxide yog hu ua txiv qaub thiab yog ib qho ntawm 10 cov tshuaj uas tsim tawm txhua xyoo los ntawm thermal decomposition ntawm limestone.

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