Video: Yuav ua li cas koj ua kmno4 tov rau titration?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntxiv 250 mL ntawm purified dej (freshly boiled thiab txias) thiab 10 mL sulfuric acid (96% H2SO4, sp g 1.84). Ntxiv sai sai los ntawm ib tug buret txog 95% ntawm theoretical kom muaj nuj nqis Kev daws ntawm poov tshuaj permanganate xav tau; do kom txog thaum daws yog tseeb.
Tsis tas li ntawd, yuav ua li cas ua cov tshuaj poov tshuaj permanganate?
Potassium permanganate yog heev soluble nyob rau hauv dej. Yog koj nyiam ua ib 1% daws : ntsuas 1 g poov tshuaj permanganate thiab ncuav nws nyob rau hauv 100 ml dej nyob rau hauv ib lub hwj (los yog ib tug haum thawv). Tsuas yog ratate kom yaj thiab koj muaj koj 1% daws . Ceev faj: xim yuav ua rau koj hnav thiab koj txhais tes (los yog tawv nqaij).
Tom qab ntawd, lo lus nug yog, yuav ua li cas yog potassium permanganate? Potassium permanganate yog ua industrially los ntawm manganese dioxide, uas kuj tshwm sim raws li cov ntxhia pyrolusite. The MnO2 yog fused nrog poov tshuaj hydroxide thiab rhuab hauv huab cua lossis nrog lwm qhov chaw ntawm oxygen, zoo li poov tshuaj nitrate los yog poov tshuaj tshuaj chlorate.
Ib yam li ntawd, vim li cas KMnO4 siv hauv titration?
Potassium Permanganate yog ib tug oxidizing tus neeg sawv cev, uas yog sib sib zog nqus violet xim. Thaum twg siv hauv redox titration , nws tau txo qis rau hauv xim av xim Mn2+ ion (hauv acidic media) ntawm qhov kawg taw tes thiab xim hloov ntawm qhov kawg taw tes tuaj yeem kuaj pom tau yooj yim.
Vim li cas KMnO4 yog qhov ntsuas tus kheej?
Yog li thaum tag nrho cov permanganate ions siv nyob rau hauv cov tshuaj tiv thaiv, cov tshuaj poob nws cov xim liab. Qhov no qhia txog qhov kawg ntawm cov tshuaj tiv thaiv thiab yog li ntawd poov tshuaj permanganate npe a tus kheej taw qhia raws li nws ua raws li ib tug qhov taw qhia sib nrug los ntawm kev ua ib qho ntawm cov reactants.
Pom zoo:
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