2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
KMnO4 spontaneously txo nyob rau hauv ib qho yooj yim tov rau ntsuab-xim poov tshuaj manganate, qhov twg manganese nyob rau hauv lub +6 oxidation xeev.
Koj ua li cas tus qauv kev daws teeb meem KMnO4?
Potassium Permanganate daws Standardization
- Rau 25.0 ml ntawm cov tshuaj nyob rau hauv ib khob-stoppered hwj ntxiv 2 g ntawm poov tshuaj iodide, ua raws li 10 ml ntawm 1 M sulfuric acid.
- Titrate cov liberated iodine nrog 0.1 M sodium thiosulphate, siv 3 ml ntawm cov hmoov txhuv nplej siab, ntxiv rau qhov kawg ntawm titration, ua qhov taw qhia.
YVim li cas cov poov tshuaj permanganate yog tus qauv?
Potassium permanganate yog tus neeg sawv cev oxidizing. Nws tuaj yeem khaws nws cov concentration nyob rau lub sijhawm ntev nyob rau hauv qhov chaw cia khoom kom zoo. Cov tshuaj tiv thaiv ntawm poov tshuaj permanganate hauv kev daws yog nrawm. … Raws li poov tshuaj permanganate tsis yog tus qauv tseem ceeb nws tuaj yeem ua qauv los ntawm kev siv sodium oxalate lossis oxalic acid.
Qhov ntsuas twg yog siv hauv Standardization ntawm KMnO4?
In burette – KMnO4 tov. Nyob rau hauv lub khob conical - 10ml ntawm oxalic acid + sulfuric acid . Indicator – Tus taw qhia tus kheej (KMnO4)
Y Yuav ua li cas hom reagent yog poov tshuaj manganate?
Cov tshuaj reagent yog
cov tshuaj alkaline ntawm potassium permanganate. Cov tshuaj tiv thaiv nrog ob lossis peb daim ntawv cog lus (-C=C- lossis -C≡C-) ua rau cov xim ploj mus ntawm purplish-liab mus rau xim av. Aldehydes thiab formic acid (thiab formates) kuj muab kev kuaj pom zoo. Qhov kev xeem yog qub.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Tus qauv twg yog qhov muaj txiaj ntsig zoo hauv kev qhia txog kev ua haujlwm ntawm cov poov tshuaj?
Teb: Kev Xaiv D) Ob tus qauv vim tias txhua tus qhia tau hais tias muaj hluav taws xob nyob hauv lub plhaub sab nraud. Kev piav qhia: Nws pom meej meej tias qauv 1 thiab qauv 2 muaj cov khoom siv hluav taws xob uas zoo ib yam rau cov poov tshuaj.
Dab tsi ntxiv txiv tsawb muaj poov tshuaj?
Khoom noj khoom haus ntawm Potassium Txiv tsawb, txiv kab ntxwv, cantaloupe, honeydew, apricots, txiv kab ntxwv (qee cov txiv hmab txiv ntoo qhuav, xws li prunes, raisins, thiab hnub, kuj muaj cov poov tshuaj siab) -siav zaub ntsuab. Ciav broccoli.
Dab tsi yog pom thaum daws cov poov tshuaj iodide?
Teb: Thaum muaj kev daws ntawm poov tshuaj iodide ntxiv rau kev daws ntawm lead nitrate lead nitrate Lead(II) nitrate yog ib qho inorganic compound nrog cov tshuaj formula Pb(NO 3 ) 2 . Nws feem ntau tshwm sim raws li cov xim tsis muaj xim lossis cov hmoov dawb thiab, tsis zoo li feem ntau lwm cov hmoov lead (II) ntsev, yog soluble hauv dej.
Thaum lub sijhawm tsom xam ntawm tus qauv addie tus tsim qauv?
Tus qauv ADDIE yog cov txheej txheem dav dav uas ib txwm siv los ntawm cov kws tsim qauv qhia thiab cov neeg tsim kev cob qhia. Tsib theem- Kev tshuaj xyuas, Tsim, Kev Txhim Kho, Kev Ua Haujlwm, thiab Kev Ntsuam Xyuas - sawv cev rau cov lus qhia zoo, hloov tau yooj yim rau kev tsim cov kev cob qhia zoo thiab cov cuab yeej txhawb nqa kev ua tau zoo.
