Yuav ua li cas sib xyaw heterogeneous sib cais?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Kev sib xyaw ua ke tuaj yeem sib cais siv ntau hom kev kawm. Chromatography muaj kev sib cais hnyav ntawm ib qho khoom nruab nrab. Distillation siv qhov zoo ntawm qhov sib txawv ntawm cov ntsiab lus kub. Evaporation tshem tawm cov kua los ntawm kev daws kom tawm hauv cov khoom siv.

Ntawm no, yuav ua li cas homogeneous sib tov sib cais?

Cheebtsam ntawm homogeneous sib tov “ ua tau feem ntau yog cais los ntawm kev ua kom zoo dua ntawm cov khoom sib txawv ntawm tus kheej cov khoom. " Nyob rau hauv tus txheej txheem ntawm distillation, a sib tov tej zaum yuav tau rhuab "kom txog thaum cov khoom uas boils ntawm qhov qis tshaj kub ua ib vapor thiab ua tau ua cais ” (Foundations, par.

Ib yam li ntawd, vim li cas nws thiaj yooj yim dua rau kev sib cais heterogeneous? Feem ntau, kuv tau pom nws yog yooj yim cais cov khoom hauv a heterogeneous sib tov (piv txwv li, pickles los ntawm hamburgers) dua li cov khoom hauv a homogeneous sib tov (piv txwv li, rum los ntawm Piña Colada) vim nws yog yooj yim dua xaiv cov khoom sib txawv thaum koj tuaj yeem pom cov khoom sib txawv.

Tsis tas li ntawd, puas tuaj yeem sib xyaw heterogeneous sib cais los ntawm lub cev txhais tau tias?

Heterogeneous Mixtures A heterogeneous sib tov yog a sib tov ntawm ob lossis ntau dua tshuaj tshuaj (cov ntsiab lus lossis cov khoom sib txuas), qhov twg cov khoom sib txawv ua tau yuav pom qhov txawv thiab yooj yim cais los ntawm lub cev txhais tau tias.

Hom kev sib tov twg tuaj yeem sib cais los ntawm distillation?

Sib cais dej los ntawm a sib tov - feem distillation . Fractional distillation yog ib txoj kev rau sib cais dej los ntawm a sib tov ntawm ob los yog ntau tshaj kua. Piv txwv li, kua ethanol tuaj yeem sib cais los ntawm a sib tov ethanol thiab dej los ntawm fractional distillation.