Recrystallization feem ntau yog siv los ua ib kauj ruam kawg tom qab lwm txoj kev sib cais xws li rho tawm, lossis kab chromatography. Recrystallization kuj tseem siv tau los cais ob lub tebchaw nrog cov khoom sib txawv heev.
Dab tsi yog recrystallization yog vim li cas nws thiaj siv?
Recrystallization, tseem hu ua fractional crystallization, yog tus txheej txheem rau purifying ib impure compound nyob rau hauv ib tug hnyav. Tus txheej txheem ntawm purification yog raws li lub hauv paus ntsiab lus uas solubility ntawm feem ntau solids nce nrog nce kub.
Yuav ua li cas recrystallization siv hauv kev lag luam?
Kev tswj hwm kev lag luam ntawm recrystallization feem ntau tsom rau kev tswj kev ntxhib los mos rau formability, tswj cov nplej loj thiab qib ntawm recrystallization rau saum npoo thiab kev puas tsuaj rau cov khoom. Xws li kev tswj tau ua tiav los ntawm manipulating nucleation thiab loj hlob ntawm cov nplej tshiab.
Vim li cas recrystallization tseem ceeb hauv lub neej tiag?
Raws li organic chemists, peb siv recrystallization li cov txheej txheem los ntxuav cov khoom xav tau lossis cov khoom pib. Yog tias koj pib nrog qhov sib xyaw ua ke uas ntshiab, koj muaj feem ntau dua rau koj cov tshuaj tiv thaiv kom ua tiav.
Lub cev dab tsi yog recrystallization raws li?
Recrystallization yog ua raws li cov hauv paus ntsiab lus ntawm solubility: cov tebchaw (cov kuab tshuaj) zoo li cov kua dej kub (cov kuab tshuaj) ntau dua li qhov txiaskua. Yog hais tias ib tug saturated kub tov yog tso cai rau txias, lub solute yuav tsis soluble nyob rau hauv cov kuab tshuaj ntxiv lawm thiab tsim crystals ntawm ntshiab compound.
