Video: Vim li cas oxalic acid Decolourise poov tshuaj permanganate?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Oxalic acid reacts nrog poov tshuaj permanganate nyob rau hauv acidic tov thiab oxidized rau carbon dioxide thiab dej. Cov xim tsis muaj xim manganese II yog tsim. Lus Cim: Cov poov tshuaj yog 'spectator' ion thiab tsis suav nrog. Cov poov tshuaj permanganate poob nws cov xim, uas muab ib qho yooj yim los ntsuas qhov kawg ntawm cov tshuaj tiv thaiv.
Hauv qhov no, ua li cas poov tshuaj permanganate teb nrog oxalic acid?
Potassium poov tshuaj permanganate standardized tiv thaiv dawb huv oxalic acid . Nws suav nrog redox tshuaj tiv thaiv . Oxalic acid yog oxidized rau carbon dioxide los ntawm KMnO4 uas nws tus kheej raug txo rau MnSO4. Oxalic acid reacts nrog poov tshuaj permanganate raws li nram no.
Tsis tas li ntawd, thaum KMnO4 tov ntxiv rau kub oxalic acid? Thaum KMnO4 tshuaj ntxiv rau oxalic acid daws , lub decolourisation qeeb thaum pib tab sis ua instantaneous tom qab qee lub sij hawm vim. A. CO2 yog tsim raws li cov khoom.
Kuj tseem paub yog, vim li cas oxalic acid siv hauv titration?
Ib qho qauv tseem ceeb yog qee yam khoom xws li oxalic acid uas tuaj yeem raug ntsuas tau meej meej hauv daim ntawv ntshiab, yog li tus naj npawb ntawm moles tam sim no tuaj yeem txiav txim siab los ntawm qhov ntsuas qhov hnyav thiab paub qhov molar loj. Cov txheej txheem daws teeb meem siv hauv ib kua qaub - puag titration tsis tas yuav yog thawj tus qauv.
Yog vim li cas poov tshuaj permanganate yog acidified?
Cov acidified poov tshuaj manganate (VII) cov tshuaj oxidises cov alkene los ntawm kev rhuav tshem cov pa roj carbon ob daim ntawv cog lus thiab hloov nws nrog ob carbon-oxygen ob daim ntawv cog lus. Cov khoom no hu ua carbonyl compounds vim lawv muaj cov pab pawg carbonyl, C = O.
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