Video: Gas mus rau cov theem hloov pauv hu ua dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Deposition yog qhov theem kev hloov hauv qhov twg gas transforms rau hauv khov kho tsis dhau los ntawm cov kua theem . Qhov rov qab ntawm deposition yog sublimation thiab li no qee zaum deposition yog hu ua desublimation.
Ua kom pom qhov no, qhov hloov pauv ntawm cov khoom mus rau cov roj yog dab tsi?
Sublimation
Kuj Paub, puas yog roj rau khoom exothermic? Yog li txhua qhov kev hloov pauv los ntawm kev txiav txim ntau dua mus rau lub xeev qis dua ( khov kho ua kua, kua rau gas , los yog khov kho rau gas ) yuav tsum muaj lub zog nkag; nws yog endothermic. Hloov pauv, txhua qhov kev hloov pauv los ntawm kev txiav txim tsawg dua mus rau lub xeev xaj ntau dua (kua rau khov kho , gas ua kua, or gas rau khoom ) tso zis zog; nws yog exothermic.
Tsis tas li ntawd, dab tsi yog qhov piv txwv ntawm deposition gas rau khoom?
Deposition hais txog tus txheej txheem uas a gas hloov ncaj qha rau a khov kho tsis mus dhau lub xeev ua kua. Rau piv txwv , thaum huab cua sov hauv ib lub tsev los rau hauv kev sib cuag nrog lub qhov rais txias txias, dej vapor hauv huab cua hloov mus rau cov dej khov me me.
Cov txheej txheem ntawm cov khoom rau roj yog dab tsi?
Sublimation yog kev hloov ntawm ib yam khoom ncaj qha los ntawm lub khov kho mus rau gas theem, tsis dhau los ntawm cov kua nruab nrab theem. Rov qab txheej txheem ntawm sublimation yog deposition los yog desublimation, nyob rau hauv uas ib yam khoom kis ncaj qha los ntawm a gas rau a khov kho theem.
Pom zoo:
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Dab tsi yog qhov kev hloov pauv ntawm cov khoom uas txav ntawm qhov chaw mus rau qhov chaw ntawm - 12 m?
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Thaum twg cov khoom hloov pauv ncaj qha mus rau cov roj, qhov kev hloov ntawm lub xeev hu ua?
Sublimation yog tus txheej txheem ntawm transformation ncaj qha los ntawm cov khoom theem mus rau lub gaseous theem, tsis dhau los ntawm ib tug nruab nrab kua theem. Tsis tas li ntawd, nyob rau hauv qhov siab ntawm qhov siab ntawm triple point, qhov kub thiab txias yuav ua rau cov khoom hloov pauv mus rau cov roj yam tsis tau dhau los ntawm cov dej hauv cheeb tsam