Dab tsi yog tus neeg sawv cev dehydrating nrog piv txwv?
Dab tsi yog tus neeg sawv cev dehydrating nrog piv txwv?

Video: Dab tsi yog tus neeg sawv cev dehydrating nrog piv txwv?

Video: Dab tsi yog tus neeg sawv cev dehydrating nrog piv txwv?
Video: Hmoob Txoj Kev Khwv Nyiaj #33 Sawv Ntxov De Khoom Rau Niam Muag [9/1/2021] 2024, Kaum ib hlis
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Cov tshuaj feem ntau siv ua dehydrating agents muaj xws li concentrated phosphoric acid, concentrated sulfuric acid, kub ceramic thiab kub aluminium oxide. A lub cev qhuav dej cov tshuaj tiv thaiv zoo ib yam li a lub cev qhuav dej synthesis.

Ib yam li ntawd, nws raug nug, dab tsi yog dehydrating agents?

A dehydrating tus neeg sawv cev yog ib yam khoom uas qhuav los yog tshem tawm cov dej los ntawm cov khoom. Sulfuric acid, concentrated phosphoric acid, kub aluminium oxide, thiab kub ceramic yog ntau dehydrating agents nyob rau hauv cov hom tshuaj tiv thaiv.

Tom qab ntawd, lo lus nug yog, qhov txawv ntawm tus neeg ua kom qhuav thiab tus neeg ua kom lub cev qhuav dej yog dab tsi? Dehydrating agents tshem tawm cov dej uas yog chemically khi rau ib yam khoom xws li dej ntawm crystallization. Thaum ntawm qhov tod tes a tshuab ziab khaub ncaws tsuas yog tshem tawm cov dej ntau dhau tam sim no hauv a cov khoom uas tsis yog chemically khi rau nws.

Dhau li ntawm qhov no, koj yuav txheeb xyuas tus neeg ua kom lub cev qhuav dej li cas?

Dehydrating agent yog ib tus neeg sawv cev uas absorbs dej. Nws yog tam sim no nyob rau hauv lub cev qhuav dej txheej txheem. Qhov ntau cov neeg ua kom lub cev qhuav dej siv nyob rau hauv cov organic synthesis yog sulfuric acid, concentrated phosphoric acid, kub ceramics, kub aluminium oxide. Qhov rov qab ntawm lub cev qhuav dej txheej txheem hu ua hydration.

Yog vim li cas p2o5 yog ib tug dehydrating agent?

Phosphorus pentoxide yog qhov muaj zog dehydrating tus neeg sawv cev Raws li qhia los ntawm exothermic xwm ntawm nws hydrolysis: P4O10 + 6 H2O → 4 H3PO4 (–177 kJ) Txawm li cas los xij, nws qhov kev siv hluav taws xob kom qhuav yog txwv me ntsis los ntawm nws txoj kev nyiam los tsim cov txheej tiv thaiv uas tiv thaiv kom lub cev qhuav dej ntxiv los ntawm cov khoom siv tsis siv.

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