Cov txheej txheem:
Video: Koj ua tus txheej txheem daws cov tshuaj iodine li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Iodine Solution Standardization
Ntxiv 2 g ntawm sodium carbonate, dilute nrog 50 ml dej thiab ntxiv 3 ml ntawm hmoov txhuv nplej siab daws . Titrate nrog rau iodine tov kom txog rau thaum cov xim xiav tas mus li. Khaws hauv amber-xim, iav-stoppered fwj. 0.05 m 1 m iodine tshuaj yog sib npaug rau 0.004946 g ntawm As2O3.
Xav txog qhov no, koj ua li cas ua ib qho tshuaj iodine?
Solub poov tshuaj iodide nyob rau hauv txog 200 cm3 dej distilled thiab ces ntxiv iodine tshuaj siv lead ua. Ua tus daws mus txog rau 1 liter nrog dej distilled. Nws yog qhov tseem ceeb rau npaj nws 24 teev ua ntej nws yuav tsum tau, raws li iodine tshuaj yog qeeb rau yaj.
Tsis tas li ntawd, puas yog Iodine yog thawj tus qauv? Txheem iodine tshuaj yog npaj los ntawm poov tshuaj iodate thiab poov tshuaj iodide, uas yog ob qho tib si thawj tus qauv ): Iodine hauv cov kuab tshuaj organic, xws li diethyl ether thiab carbon tetrachloride, tuaj yeem suav nrog tiv thaiv sodium thiosulfate yaj hauv acetone.
Ib yam li ntawd, koj ua li cas tus qauv kev daws teeb meem?
Sodium Thiosulphate hmoov Kev Txhim Kho Cov Qauv Swirl kom yaj cov khoom, tshem tus nres, thiab ntxiv 3 g ntawm Potassium Iodide, 2 g ntawm Sodium Bicarbonate, thiab 5 ml ntawm hydrochloric acid. Ntxig lub stopper maj mam muab tso rau hauv lub hwj, swirl sib tov, thiab cia sawv ntsug hauv qhov tsaus ntuj rau 10 feeb.
Dab tsi yog cov tshuaj iodine ua los ntawm?
Cov tshuaj feem ntau siv 15% muaj 5% (wt / v) elemental iodine (I2) thiab 10% (wt/v) poov tshuaj iodide (KI) sib tov hauv distilled dej , thiab muaj tag nrho cov ntsiab lus iodine ntawm 126.5 mg / mL. Cov iodide ua ke nrog cov ntsiab lus iodine los ua kom muaj qhov siab ntawm potassium triiodide (KI3) daws.
Pom zoo:
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