Video: Dab tsi yog recrystallization hauv organic chemistry?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv chemistry , recrystallization yog ib txoj kev siv los ntxuav tshuaj . Los ntawm dissolving ob qho tib si impurities thiab ib tug compound nyob rau hauv ib tug tsim nyog cov kuab tshuaj, tog twg los xav compound los yog impurities yuav raug tshem tawm los ntawm cov tshuaj, tawm hauv lwm yam qab.
Yog li ntawd, dab tsi yog txhais los ntawm recrystallization?
Recrystalization (saib crystallization) yog ib qho tseem ceeb ntawm lub cev txheej txheem uas muaj lub ntsiab lus hauv chemistry, metallurgy thiab geology. Hauv chemistry, recrystallization yog txheej txheem rau purifying compounds. Ib qho khoom siv lead ua feem ntau muaj lwm cov ntsiab lus ntawm nws uas ua rau nws tsis tshua muaj txiaj ntsig.
Tsis tas li ntawd, 7 cov kauj ruam ntawm recrystallization yog dab tsi? Cov ntsiab lus hauv cov teeb no (7)
- xaiv qhov hnyav thiab hnyav ua khub.
- yaj lub solute.
- decolorizing cov tshuaj nrog pelletized Norit.
- lim cov khoom raug tshem tawm.
- recrystalizing cov kua.
- sau thiab ntxuav cov muaju.
- ziab cov crystals.
Tsuas yog li ntawd, dab tsi yog 5 cov kauj ruam tseem ceeb ntawm recrystallization ntawm ib qho compound?
Muaj tsib kauj ruam tseem ceeb hauv recrystallization txheej txheem : dissolving cov kuab tshuaj nyob rau hauv cov kuab tshuaj, ua ib tug gravity lim , yog tias tsim nyog, tau txais cov khoom siv lead ua ntawm cov kua nplaum, sau cov kua nplaum los ntawm lub tshuab nqus tsev lim , thiab, thaum kawg, ziab lub resulting crystals.
Koj xaiv cov kuab tshuaj recrystallization li cas?
Cov qauv siv rau xaiv ib qho tsim nyog recrystallization hnyav suav nrog: a.) nrhiav a kuab tshuaj nrog lub siab kub coefficient. Cov kuab tshuaj yuav tsum tsis txhob yaj lub compound ntawm qhov kub thiab txias (uas muaj xws li chav tsev kub), tab sis yuav tsum dissolve lub compound nyob rau hauv high kub.
Pom zoo:
Dab tsi yog qhov txawv ntawm cov chemistry thiab organic chemistry?
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Dab tsi yog ISO thiab Neo hauv organic chemistry?
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Dab tsi yog enantiomers hauv organic chemistry?
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Dab tsi yog prefix hauv organic chemistry?
Lub npe prefix los ua ntej lub molecule. Lub npe ua ntej ntawm lub npe molecule yog nyob ntawm tus naj npawb ntawm carbon atoms. Piv txwv li, ib tug saw ntawm rau carbon atoms yuav muab npe siv lub prefix hex-. Lub ntsiab lus ntawm lub npe yog qhov xaus uas yog siv los piav qhia txog hom tshuaj lom neeg hauv cov molecule