Complexometric titration: Ib qho titration raws li kev tsim nyuaj. Lewis acid: lees txais electron khub electron khub Nyob rau hauv chemistry, ib tug chim Lewis khub (FLP) yog a compound los yog sib tov uas muaj ib tug Lewis acid thiab ib tug Lewis puag uas, vim yog steric hindrance, tsis tuaj yeem ua ke. los ua ib tug classical adduct. Ntau hom FLPs tau raug tsim tawm, thiab ntau lub substrates yooj yim nthuav qhia ua kom. https://en.wikipedia.org › wiki › Frustrated_Lewis_pair
Txoj kev nyuaj siab Lewis khub - Wikipedia
ntawm electron pub ligands. Lewis puag: donating electrons rau Lewis acid. Monodentate ligand: lub ligand khi rau ib tug hlau ion los ntawm tsuas yog ib tug atom e.g. Cyanide (CN-).
Lub hauv paus ntawm kev sib xyaw ua ke yog dab tsi?
Complexometric titration yog raws li qhov tseeb uas qee cov organic tebchaw tsim kev ruaj khov nrog cov hlau ions hauv kev daws.
Lub luag haujlwm ntawm EDTA yog dab tsi hauv complexometric titration?
Cov ntsuas feem ntau hauv cov txheej txheem complexometric titration yog cov organic dyes uas ua haujlwm los ntawm kev tsim cov xim sib txawv nrog cov hlau ion raug titrated. Thaum lub sij hawm cov tshuaj tiv thaiv, EDTA hloov qhov ntsuas los tsim ib qho chaw ruaj khov nrog hlauthiab thaum cov tshuaj tiv thaiv ua tiav qhov kev hloov ntawm cov xim yog pom.
Yuav ua li cas titration siv nyob rau hauv complexometric titration?
Direct Titration- Nws yog txoj kev yooj yim tshaj plaws thiab yooj yim ntawm txoj kev sib xyaw ua ke siv EDTA. Nws zoo ib yam li cov txheej txheem acid-base titration. Nyob rau hauv no titration standard EDTA tov yog ntxiv rau cov qauv uas muaj hlau siv burette kom txog thaum kawg point yog tiav.
Puas EDTA yog Lewis puag?
EDTA, ethylenediaminetetraacetic acid, muaj plaub pawg carboxyl thiab ob pawg amine uas tuaj yeem ua raws li cov khoom siv hluav taws xob, lossis Lewis bases Lub peev xwm ntawm EDTA muaj peev xwm pub dawb rau nws rau ib leeg. ntawm electrons rau kev tsim cov kev sib koom tes covalent bonds rau hlau cations ua EDTA ib hexadentate ligand.
