2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob rau hauv colloidal thiab nto chemistry, qhov tseem ceeb micelle concentration (CMC) yog txhais raws li lub concentration ntawm surfactants saum toj no uas micelles tsim thiab tag nrho cov surfactants ntxiv rau lub system yuav tsim micelles. CMC yog tus yam ntxwv tseem ceeb ntawm surfactant.
Yuav ua li cas rau cov molecules surfactant ntawm qhov tseem ceeb micelle concentration?
Nyob rau hauv colloidal thiab nto chemistry, qhov tseem ceeb micelle concentration yog txhais raws li qhov concentration saum toj no uas micelles tsim. … Thaum qhov chaw nkag mus, qhov sib ntxiv ntawm cov surfactant molecules yuav ua rau tsim cov micelles. Cov ntsiab lus concentration no yog hu ua qhov tseem ceeb micelle concentration [187].
Dab tsi hloov pauv ntawm qhov tseem ceeb micelle concentration?
Qhov kev xav no raug xa mus rau qhov tseem ceeb micelle concentration (CMC) (Daim duab 1). Hauv qab ntawm CMC micelles tsis nyob thiab qhov nro ntawm cov tshuaj txo qis thiab osmotic siab nce nrog kev nce hauv surfactant.
Puas yog micelle yog surfactant?
Piv txwv li daim ntawv micelles uas muaj ntau pawg surfactant molecules uas tiv thaiv lawv cov saw hlau uas tsis yog-polar los ntawm ib puag ncig aqueous theem nrog lawv pawg polar taub hau (saib daim duab 3). … Qhov tseem ceeb micelle concentration CMC yog cov surfactant concentration ntawm thiab saum toj no uas micelles yogformed.
YPuas yog dej yog surfactant?
Lo lus 'surfactant' yog luv luv rau 'tus neeg ua haujlwm saum npoo av'. Surfactants txo cov zog ntuj uas tshwm sim ntawm ob theem xws li huab cua thiab dej (qhov nro) los yog roj thiab dej (interfacial nro) thiab, nyob rau hauv qhov kawg, pab kom lawv ua ke.
Pom zoo:
Puas yog qhov tseem ceeb lossis qhov tseem ceeb?
Emphasise thiab hais txog yog ob qhov kev hloov pauv ntawm cov lus qhia uas txhais tau hais tias qhov tseem ceeb ntawm qee yam. Keeb kwm, hais txog yog tus qauv hauv Askiv Askiv, tab sis niaj hnub no, kev hais qhia ntau dua hauv Askiv thiab Asmeskas Askiv.
Dab tsi yog qhov tseem ceeb thiab vim li cas nws tseem ceeb los txheeb xyuas koj qhov tseem ceeb?
Qhov tseem ceeb yuav coj koj hauv kev txiav txim siab hauv lub neej thiab ua rau koj taug qab. Qhov tseem ceeb tshaj plaws, qhov tseem ceeb tshaj plaws yuav ua rau koj ntseeg siab hais tias "tsis yog." Lawv pab koj txheeb xyuas qhov xav tau tiag tiag hauv koj lub neej, piv rau lwm tus xav tias tseem ceeb.
Rau cov xab npum tseem ceeb micelle concentration yog?
Rau cov xab npum qhov tseem ceeb micelle concentration (CMC) yog \[{10^{ - 4}}] (min.) rau \[{10^{ - 3 }}] (max.) mol/L, tus nqi ntawm x yuav yog 4. CMC ntawm xab npum yog dab tsi? Los ntawm Wikipedia, phau ntawv qhia dawb.
Qhov twg yog qhov kev sib raug zoo ntawm stereochemical ntawm ob khub ntawm cov molecules?
Enantiomers thiab diastereomers tsuas yog ob qho kev sib raug zoo stereochemical uas koj tuaj yeem muaj ntawm ob lub molecules. Cov stereoisomers yog ob lub molecules uas ua tiav ob qhov kev xav tau hauv qab no: Ob lub molecules yuav tsum muaj tib lub qauv molecular, thiab.
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
