2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Kev piav qhia: Cov kuab tshuaj siv rau recrystallization qhov zoo tshaj plaws muab cov dej tsis zoo hauv cov kuab tshuaj txias, tab sis zoo rau middling solubility hauv cov kuab tshuaj kub. … Acetone nyiam ua cov kuab tshuaj zoo ntawm txhua qhov kub; cov khoom yuav nce mus rau hauv nws, thiab tsis kam ua crystallize.
Vim li cas acetone tsis yog cov kuab tshuaj recrystallization zoo?
Cov kuab tshuaj nrog cov ntsiab lus kub qis heev (piv txwv li diethyl ether, acetone, thiab cov roj av qis qis) yog flammablethiab tuaj yeem ua haujlwm nyuaj nrog lawv yooj yim evaporate. … Yog hais tias ib tug compound feem ntau tsis muaj polar, nws tej zaum yuav crystallized los ntawm roj av ether los yog hexanes, los yog tej zaum yuav xav tau ib tug tov hnyav.
Vim li cas acetone thiaj li muaj kuab tshuaj zoo?
Acetone yog cov kuab tshuaj zoo vim nws muaj peev xwm ua kom yaj cov polar thiab nonpolar, thaum lwm cov kuab tshuaj tsuas yog yaj ib los yog lwm yam. … Thib ob, acetone yog cov kuab tshuaj zoo vim nws yog cov khoom siv miscible, txhais tau tias nws muaj peev xwm sib tov nrog dej hauv txhua qhov sib npaug.
Dab tsi ua rau cov kuab tshuaj zoo tagnrho rau siv hauv recrystallization?
Cov yam ntxwv ntawm qhov zoo Recrystallization Solvent: Cov kuab tshuaj recrystallization yuav tsum tsis txhob yaj cov tshuaj kom huv hauv chav sov, tab sis nws yuav tsum yaj nws zoo ntawm qhov hnyav qhov kub kub taw tes 2. Cov hnyav yuav tsum dissolve soluble impurities zoo nyob rau hauv chav tsev kub.
Puas yog dej ua cov kuab tshuaj recrystallization zoo?
Rau feem ntau cov organic tebchaw, dej tsis yog cov kuab tshuaj zoo recrystallization. Recrystallization yuav tsum tau ua siab ntev tseem ceeb yog li npaj siab ua siab ntev. Yog tias koj saib cov khoom hauv cov tshuaj tseem, siv lub nqus nqus lim tshem tawm (kub nqus nqus pom).
Pom zoo:
Cov piv txwv ntawm cov kuab tshuaj thiab cov kuab tshuaj yog dab tsi?
Solutes yog cov khoom uas yaj rau hauv cov kuab tshuaj thiab peb xaus nrog kev daws. Qee qhov piv txwv ntawm cov kuab tshuaj yog dej, ethanol, toluene, chloroform, acetone, mis nyuj, thiab lwm yam. Piv txwv ntawm cov kuab tshuaj muaj xws li, qab zib, ntsev, oxygen, thiab lwm yam … Cov dej dej muaj dej (kua kua) thiab yaj oxygen (solute).
Puas muaj cov kuab tshuaj ntau dua li cov kuab tshuaj?
Ib tshuaj yog ib homogeneous sib tov ntawm ob los yog ntau tshaj tshuaj. Cov khoom uas muaj nyob rau hauv qhov loj tshaj plaws yog hu ua cov kuab tshuaj thiab ib qho tam sim no nyob rau hauv lub me me yog hu ua ib tug solute. Tsuas muaj ib qho kuab tshuaj xwb, tab sis muaj peev xwm ua tau ntau yam.
Cov tshuaj twg yog cov tshuaj uas tsis yog tshuaj tiv thaiv inflammatory analgesic?
Txhua yam koj yuav tsum paub txog NSAIDs. Nonsteroidal anti-inflammatory tshuaj (NSAIDs) yog cov tshuaj uas txo qis lossis txo qhov mob. Cov piv txwv nrov tshaj plaws ntawm cov tshuaj hauv pawg no yog aspirin thiab ibuprofen. NSAIDs tuaj nyob rau hauv lub ntsiab lus dav ntawm non-opioid analgesics.
Cov kuab tshuaj puas tshem tawm cov stains?
Kev tshem tawm kab yog txheej txheem ntawm kev tshem tawm cov cim lossis qhov chaw sab laug los ntawm ib qho khoom ntawm ib qho chaw xws li ntaub. A solvent lossis detergent feem ntau yog siv los tshem tawm cov stain thiab ntau yam no muaj nyob hauv lub txee.
Vim li cas dej yog cov kuab tshuaj zoo rau recrystallization ntawm acetanilide?
Vim li cas dej yog cov kuab tshuaj zoo rau recrystallization ntawm acetanilide? Acetanilide nkag tau yooj yim yaj hauv dej kub, tab sis yog insoluble ntawm qis temps. Yog li, nws dissolves hauv dej kub tab sis crystalizes yooj yim thaum txias.
