Video: Thaum twg FeCl3 tov ntxiv rau NaOH?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib tug tsis zoo nqi sol ntawm hydrated ferric oxide yog tsim thaum ferric chloride yog ntxiv rau NaOH tshuaj raws li hauv qab no: FeCl3 + 2NaOH → Fe(OH)3 + 3NaCl. Lub neagtivelycharged sol yog tau vim yog qhov nyiam adsorption ntawm OH- ions uas tsim hluav taws xob ob txheej.
Ib yam li ntawd, yuav ua li cas thaum FeCl3 ntxiv rau NaOH?
FeCl3 reacts nrog NaOH tsim Fe (OH) 3 thiab NaCl. Txij li cov hlau (III) chloride thiab sodium chloride yog soluble hauv dej, tab sis tsis yog hlau (III) hydroxide, cov tshuaj tiv thaiv ua rau cov khoom ua kom dej nag. Raws li hlau (III) hydroxide yog xim av, abrown precipitate yog tsim. Li no, qhov no yog hu ua aprecipitation reaction.
Qhov thib ob, yuav ua li cas thaum FeCl3 ntxiv rau cov dej kub tshaj? Yog FeCl3 yog ntxiv rau cov dej kub tshaj , apostively them sol ntawm hydrated ferric oxide yog tsim los ntawm adsorption ntawm Fe3+ ions. Txawm li cas los xij, thaum ferric chloride ntxiv rau NaOH, ib qho kev them nqi tsis zoo yog tau txais nrog adsorption ntawm OH-ions.
Ib yam li ntawd, koj tuaj yeem nug, thaum NaCl tov ntxiv rau Fe OH 3 colloidal tov ces tsim dab tsi?
Fe hloov tsis tau Na. Thaum twg NaCl tov yog ntxiv rau a Fe ( OH ) 3 colloidal tshuaj , coagulation tshwm sim. - Thaum ntsev ntxiv rau dej, nws dissociates rau Na+ & Cl-ions. - Raws li hais ntawm Fe ( OH ) 3 daws tau txais txiaj ntsig zoo, lawv tau coagulated nyob rau hauv muaj qhov tsis zoo them Cl-ions.
Xim ntawm ferric hydroxide yog dab tsi?
Hlau (II) hydroxide nws tus kheej yog xyaum dawb, tab sis txawm tias cov kab mob ntawm cov pa oxygen impart ib qho ntsuab tinge. Yog tias qhov kev daws teeb meem tsis yog deoxygenated thiab hlau txo qis, theprecipitate tuaj yeem sib txawv hauv xim pib ntawm ntsuab mus reddishbrown nyob ntawm qhov hlau (III) cov ntsiab lus.
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