Video: Yuav ua li cas koj ua tus eriochrome dub T qhia?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntxiv 95 feem pua ethyl cawv kom txaus t Muab cov hnab looj tes thiab cov tsom iav tiv thaiv thiab hnyav li 0.5 g ntawm cov khoom Eriochrome Dub T , (EBT) ntawm qhov sib npaug thiab hloov mus rau lub khob me me lossis lub khob. Ntxiv li 50 mL ntawm 95 feem pua ntawm ethyl cawv thiab swirl qhov sib tov kom txog thaum EBT tau yaj tag.
Kuj nug, koj yuav ua li cas thiaj ua tau eriochrome dub T ntsuas ntsuas?
(i) cov daws ntawm qhov taw qhia yog npaj los ntawm dissolving 1 g ntawm Eriochrome Dub T Hauv 15 ml ntawm trienthanol amine thiab ntxiv 5 ml ntawm absoluta cawv. Nws kuj tuaj yeem ua tau npaj los ntawm dissolving 0.2 g ntawm Eriochrome Dub T nyob rau hauv 20 ml ntawm absolute cawv. Siv li 3 mus rau 4 tee ntawm cov qhia daws teeb meem.
Tsis tas li ntawd, qhov muaj pes tsawg leeg ntawm eriochrome dub T qhia yog dab tsi? 40% Ethanol / 60% Triethanolamine Kev sib xyaw : Triethanolamine 67.57%, Ethyl Cawv 28.62%, Isopropyl Cawv 1.58%, Methyl Cawv 1.43%, Eriochrome Dub T 0.80% Density: 1 Xim: Tsaus xiav kua Lub cev Lub cev: Ua kua Solubility Cov ntaub ntawv: Miscible Txee Lub neej: 6 Lub Hlis Cia:…
Kuj Paub, eriochrome dub T ua haujlwm li cas?
Eriochrome dub T yog siv raws li ib tug qhov taw qhia rau complexometric titrations vim nws tsim ib tug complex nrog calcium, magnesium thiab lwm yam hlau ions nyob rau hauv nws protonated daim ntawv. Thaum titrated nrog EDTA, cov hlau ions complexed nrog eriochrome dub T reacts nrog EDTA tsim cov tshuaj xiav.
Kev siv qhov ntsuas EBT yog dab tsi?
Eriochrome Dub-T ( EBT ) yog ib qho azo compound, carcinogenic hauv xwm. Nws yog feem ntau siv as ib qhov taw qhia nyob rau hauv complexometric titrations rau kev txiav txim siab ntawm tag nrho cov hardness ntawm dej vim hais tias xws li calcium, zinc, magnesium thiab lwm yam hlau ions. Nws paub zoo txog nws cov khoom chelate.
Pom zoo:
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