Lub hom phiaj ntawm ziab cov organic tov yog dab tsi?
Lub hom phiaj ntawm ziab cov organic tov yog dab tsi?

Video: Lub hom phiaj ntawm ziab cov organic tov yog dab tsi?

Video: Lub hom phiaj ntawm ziab cov organic tov yog dab tsi?
Video: Thaam rua peb Moob - Teb Koob Xwm Xyooj txug lub pobzeb Moob leeg 2024, Kaum ib hlis
Anonim

Ib tus neeg ua kom qhuav yog swirled nrog cov tshuaj organic kom tshem tawm cov kab mob dej . Ntau cov organic solvents dissolve ib feem tseem ceeb ntawm dej (Table 4.6) uas yuav tsum tau muab tshem tawm ua ntej rotary evaporation, los yog lwm yam dej yuav pom nyob rau hauv cov khoom concentrated.

Xav txog qhov no, nws txhais li cas kom qhuav cov tshuaj organic?

Qhuav ntawm organic tshuaj txhais tau tias tshem tawm cov dej noo (dej) los ntawm lub organic kuab tshuaj.

Ib yam li ntawd, vim li cas nws tseem ceeb kom qhuav cov organic theem ua ntej tshem tawm cov kuab tshuaj? Cov ziab tus neeg sawv cev ua haujlwm rau tshem tawm dej kom cov 100C feem raug tshem tawm rau distillation, tab sis kuj yuav nqus dej thiab cov impurities nqa nyob rau hauv lub dej theem . Yog tias koj txhawj xeeb txog qhov purity ntawm koj cov khoom, ziab nws ua rau kom muaj feem ntau tshem tawm ua tau impurities.

Kuj kom paub, lub hom phiaj ntawm kev ziab khaub ncaws yog dab tsi?

A tshuab ziab khaub ncaws yog ib qho tshuaj siv los tshem tawm cov dej los ntawm cov organic compound uas yog nyob rau hauv kev daws. Hauv kev tsim lossis cais cov tshuaj sib xyaw ua ke lawv feem ntau ua paug nrog dej. Cov neeg ua kom qhuav tuaj yeem ua tau zoo li Calclium chloride, Potassium chloride, lossis Magnesium sulfate.

Lub hom phiaj ntawm kev ntxuav cov txheej txheem organic nrog sodium bicarbonate yog dab tsi?

(a) Sodium bicarbonate yog lub hauv paus, yog li nws feem ntau yog siv los nruab nrab thiab tshem tawm cov kua qaub. Hauv qhov no, H2SO4 tau siv los txhawb cov esterification. Ntxuav cov organic txheej nrog sodium bicarbonate tshem tawm H2SO4 los ntawm thiab neutralizes lub organic txheej.

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