Qhov sib txawv tseem ceeb ntawm potentiometric thiab conductometric titrations yog tias potentiometric titrations ntsuas lub peev xwm thoob plaws qhov ntsuas, qhov conductometric titration ntsuas cov electrolytic conductivity ntawm tus ntsuas.
A titration yog ib qho kev tshuaj ntsuam xyuas uas peb tuaj yeem txiav txim siab qhov concentration ntawm tus ntsuas. Ntawm no, peb xav tau ib tug titrant uas ua raws li tus qauv kev daws teeb meem uas muaj ib tug paub concentration. Los ntawm qhov titrant no, peb tuaj yeem txiav txim siab qhov concentration ntawm qhov tsis paub daws teeb meem. Tsis tas li ntawd, muaj ntau hom titrations; redox titrations, potentiometric titrations, conductometric titrations, thiab lwm yam.
Potentiometric Titrations yog dab tsi?
Potentiometric titrations yog cov txheej txheem tshuaj ntsuam xyuas uas pab peb ntsuas lub peev xwm thoob plaws qhov ntsuas. Hauv qhov titration no, peb tsis tas yuav siv qhov ntsuas los txiav txim qhov kawg ntawm qhov titration. Txawm li cas los xij, qhov titration no zoo ib yam li redox titration.
Hauv lub cuab yeej, peb xav tau ob lub tshuab hluav taws xob: qhov ntsuas hluav taws xob thiab cov khoom siv hluav taws xob siv. Feem ntau, peb siv iav electrodes raws li qhov taw qhia electrode thiab hydrogen electrodes, calomel electrodes thiab nyiaj chloride electrodes raws li siv electrodes. Qhov taw qhia electrode yog qhov tseem ceeb los saib xyuas qhov kawg ntawm qhov titration. Thaum kawg, qhov kev hloov pauv loj tshaj plaws tuaj yeem pom tau.
Daim duab 01: Muaj Kev Hloov Siab Tam Sim No Thaum Muaj Peev Xwm Thaum Titration
Thaum xav txog qhov zoo ntawm cov txheej txheem no, nws tsis tas yuav muaj qhov taw qhia thiab yog qhov tseeb dua li phau ntawv titration. Ntxiv mus, muaj ntau ntau hom kev siv potentiometric titration uas muab rau peb nrog ntau yam kev xaiv nyob ntawm qhov xav tau. Tsis tas li ntawd, hom titrations no ua haujlwm zoo nrog cov tshuab automated.
Dab tsi yog Conductometric Titrations?
Conductometric titrations yog cov txheej txheem tshuaj ntsuam xyuas uas pab ntsuas qhov kev ntsuas ntawm tus ntsuas. Lub conductivity ntawm ib qho tshuaj ntsuam xyuas yog vim muaj cov ions them nyiaj hauv cov tshuaj ntsuam xyuas. Hauv cov txheej txheem no, peb tuaj yeem txiav txim siab qhov conductivity tsis tu ncua thaum ntxiv cov reactant. Ntawm no, peb tuaj yeem tau txais qhov kawg raws li kev hloov pauv sai sai hauv kev coj ua.
Daim duab 02: Cov cuab yeej rau kev coj tus kheej titration
Ntxiv mus, ib qho tseem ceeb ntawm cov txheej txheem titration no yog tias peb tuaj yeem siv cov qauv no rau cov xim analytes thiab tshem tawm ib yam nkaus, uas nyuaj rau titrated nrog cov ntsuas ib txwm muaj.
Qhov txawv ntawm Potentiometric thiab Conductometric Titrations yog dab tsi?
Qhov sib txawv tseem ceeb ntawm potentiometric thiab conductometric titrations yog tias potentiometric titrations ntsuas lub peev xwm thoob plaws qhov ntsuas, qhov conductometric titration ntsuas cov electrolytic conductivity ntawm tus ntsuas. Thaum xav txog qhov sib txawv ntawm potentiometric thiab conductometric titrations raws li qhov zoo, cov potentiometric titrations tsis xav tau qhov taw qhia; Nws yog qhov tseeb dua, thiab nws tuaj yeem ua haujlwm tau, thaum lub conductometric titrations tuaj yeem tsim nyog rau cov xim analytes thiab ncua kev kawm, thiab muab cov txiaj ntsig raug.
Ntxiv mus, raws li qhov tsis zoo, qhov sib txawv ntawm potentiometric thiab conductometric titration yog tias potentiometric titration yog pH rhiab heev thaum qhov tsis zoo ntawm conductometric titration yog tias nce qib ntsev tuaj yeem ua rau qhov tsis zoo ntawm qhov kawg tshwm sim.
Summary – Potentiometric vs Conductometric Titrations
Nyob rau hauv cov ntsiab lus, qhov sib txawv tseem ceeb ntawm potentiometric thiab conductometric titrations yog tias potentiometric titrations ntsuas lub peev xwm thoob plaws cov tshuaj ntsuam xyuas, whereas conductometric titrations ntsuas cov electrolytic conductivity ntawm lub analyte.
