Video: Dab tsi yog qhov hnyav pem hauv ntej hauv chromatography?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
hnyav pem hauv ntej . ['säl·v?nt 'fr?nt] (analytical chemistry) Hauv ntawv chromatography , ntub txav ntug ntawm lub kuab tshuaj uas nce raws ntawm qhov chaw uas qhov kev sib cais ntawm qhov sib tov tshwm sim.
Hauv qhov no, dab tsi yog qhov hnyav pem hauv ntej hauv TLC?
Nyias-txheej chromatography ( TLC ) yog cov txheej txheem chromatography siv los cais cov khoom sib xyaw uas tsis yog-volatile. Tom qab tus qauv tau siv rau ntawm lub phaj , a kuab tshuaj los yog kuab tshuaj sib tov (paub tias yog theem mobile) yog kos li phaj los ntawm kev ua haujlwm capillary.
Ib tug kuj yuav nug, dab tsi yog qhov hnyav tshaj plaws rau daim ntawv chromatography? Npaj muaj cov kuab tshuaj rau daim ntawv Chromatography
| Solvent | Polarity (qhov ntsuas qhov ntsuas ntawm 1-5) | Kev tsim nyog |
|---|---|---|
| Dej | 1 - Feem ntau cov polar | Zoo |
| Rubbing cawv (ethyl type) lossis denatured cawv | 2 - Siab polarity | Zoo |
| Rubbing cawv (isopropyl hom) | 3 - Nruab nrab polarity | Zoo |
| Vinegar | 3 - Nruab nrab polarity | Zoo |
Ib sab saum toj no, dab tsi yog qhov ua haujlwm ntawm hnyav hauv chromatography?
1 Teb. Chromatography yog ib qho txheej txheem siv los cais cov khoom sib xyaw. txawv cov kuab tshuaj yuav yaj cov khoom sib txawv. Ib tug polar kuab tshuaj (dej) yuav yaj cov polar tshuaj (dej soluble number case hauv video hauv qab no).
Yuav ua li cas koj xam cov kuab tshuaj pem hauv ntej?
Ntsuas qhov deb ntawm txoj kab pib mus rau qhov hnyav pem hauv ntej (=d). Ces ntsuas qhov deb ntawm qhov chaw ntawm qhov chaw mus rau kab pib (=a). Faib qhov nrug qhov kuab tshuaj tsiv los ntawm qhov deb ntawm tus kheej qhov chaw tsiv. Qhov txiaj ntsig tau txais yog hu ua Rf- tus nqi.
Pom zoo:
Daim duab yoj pem hauv ntej qhia dab tsi?
Daim duab yoj pem hauv ntej qhia peb tias lub crest ntawm nthwv dej tau pom ntau npaum li cas. Nyob rau hauv ib txwm muaj qhov no yuav tsuas yog ib daim duab nrog cov kab sib npaug sib nrug, txij li yoj crests tshwm sim nyob rau hauv sib nrug deb ntawm ib leeg
Puas yog qhov hnyav lossis qhov hnyav?
Qhov loj ntawm ib yam khoom yog ib qho kev ntsuas ntawm cov khoom inertial khoom, los yog tus nqi ntawm cov khoom nws muaj. Qhov hnyav ntawm ib yam khoom yog ib qho kev ntsuas ntawm lub zog ntawm qhov khoom los ntawm lub ntiajteb txawj nqus, lossis lub zog xav tau los txhawb nws. Qhov rub ntawm lub ntiajteb txawj nqus ntawm lub ntiaj teb muab ib yam khoom ib tug downward acceleration ntawm txog 9.8 m / s2
Koj tuaj yeem qhia tau li cas yog tias muaj kev cuam tshuam rau pem hauv ntej lossis thim rov qab?
Yog tias K K, cov reactants tau txais kev pom zoo. Yog tias Q< K, cov khoom raug nyiam
Qhov txawv ntawm qhov hnyav thiab qhov hnyav yog dab tsi?
Raws li lub npe qhov sib txawv ntawm qhov hnyav thiab hnyav yog tias lub nra yog lub nra; qhov hnyav yuav tsum tau nqa thaum qhov hnyav yog lub zog ntawm ib qho khoom vim qhov kev sib tw ntawm nws thiab lub ntiaj teb (lossis yam khoom siv astronomical nws feem ntau cuam tshuam los ntawm)
Dab tsi yog qhov sib xyaw ua ntej hauv kab chromatography?
Cov kuab tshuaj tsawg-polar yog thawj zaug siv los hais txog qhov tsis tshua muaj polar compound. Thaum qhov tsawg-polar compound tawm ntawm kem, ib qho ntxiv-polar hnyav ntxiv rau hauv kem kom elute qhov ntau-polar compound