Cov txheej txheem:
Video: Dab tsi ua rau tus qauv tseem ceeb zoo?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A zoo thawj tus qauv ua tau raws li cov hauv qab no: Muaj qib siab purity. Muaj qhov tsis muaj zog (siab ruaj khov) Muaj qhov hnyav sib npaug (kom txo qhov yuam kev los ntawm kev ntsuas huab hwm coj)
Hauv qhov no, dab tsi yog qhov yuav tsum tau ua ntawm tus qauv tseem ceeb?
Cov yam ntxwv ntawm tus qauv tseem ceeb muaj xws li:
- Siab purity.
- Stability (tsawg reactivity)
- Tsawg hygroscopicity (kom txo qhov hnyav hloov vim av noo)
- Qhov hnyav sib npaug (kom txo qhov hnyav hnyav)
- Tsis muaj tshuaj lom.
- Npaj thiab pheej yig muaj.
Tsis tas li ntawd, qhov sib txawv ntawm cov txheej txheem tseem ceeb thiab cov txheej txheem daws teeb meem yog dab tsi? Tus yuam sij qhov sib txawv ntawm qhov tseem ceeb thiab theem nrab kev daws teeb meem yog tias thawj txheej txheem daws teeb meem muaj purity siab thiab tsawg reactivity whereas kev daws teeb meem thib ob muaj tsawg purity thiab siab reactivity. Txuj kev daws teeb meem muaj tseeb paub cov concentrations thiab peb npaj cov no kev daws teeb meem siv txheem tshuaj.
Ntxiv mus, dab tsi ua rau tus qauv zoo rau titration?
Cov yam ntxwv no muaj xws li purity siab, tsis tshua muaj reactivity nrog huab cua los yog ib puag ncig ib puag ncig, tsis tshua muaj hygroscopicity, loj molar mass thiab ib tug kwv yees reactivity.
Cov qauv thawj thiab theem nrab yog dab tsi?
A thawj tus qauv yog paub purity thiab stability uas yuav ntsuas tau yog thiab siv nyob rau hauv nws tag nrho yuav tsum tsis muaj kev ntsuas ntxiv. Cov qauv thib ob yog standardized tiv thaiv a thawj tus qauv thiab feem ntau yog siv los ntsuas qhov tseeb.
Pom zoo:
Dab tsi yog qhov ntsuas phoo thiab tus qauv tseem ceeb rau cov enzymes?
Qhov kev txiav txim tshwj xeeb ntawm ib qho enzyme nrog ib lub substrate tuaj yeem piav qhia tau siv lub Xauv thiab Cov Ntsiab Lus piv txwv thawj zaug tau tshaj tawm hauv xyoo 1894 los ntawm Emil Fischer. Hauv qhov piv txwv no, lub xauv yog lub enzyme thiab tus yuam sij yog lub substrate. Tsuas yog tus yuam sij kom raug (substrate) haum rau hauv lub qhov tseem ceeb (qhov chaw nquag) ntawm lub xauv (enzyme)
Tus qauv ntsuas kub thiab siab yog dab tsi Vim li cas tus qauv tsim nyog?
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Yuav ua li cas yog vim li cas tus qauv ntawm ib qho enzyme tseem ceeb heev rau nws txoj haujlwm hauv cov khoom muaj sia?
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