Qhov sib txawv tseem ceeb ntawm aqueous thiab non-aqueous titration yog aqueous titrations siv dej ua cov kuab tshuaj rau dissolving cov qauv analytes rau titration, whereas non-aqueous titrations siv organic solvents rau dissolving tus qauv.
Titration yog cov txheej txheem tshuaj ntsuam xyuas uas muaj txiaj ntsig zoo hauv kev ntsuas qhov concentration ntawm cov tshuaj lom neeg. Peb tuaj yeem ua qhov no siv qhov kev daws teeb meem uas muaj kev paub txog qhov tseeb. Cov txheej txheem titration yuav tsum muaj cov cuab yeej tshwj xeeb.
Nyob rau hauv ib lub titration apparatus, muaj ib tug burette uas feem ntau muaj cov txheej txheem tov nrog ib tug paub concentration. Yog hais tias cov tshuaj nyob rau hauv lub burette tsis yog ib tug qauv kev daws teeb meem, nws yuav tsum tau standardized siv tus qauv thawj. Lub raj mis titration tau ntim nrog cov qauv uas muaj cov tshuaj lom neeg uas tsis paub meej. Yog tias cov txheej txheem kev daws teeb meem (hauv burette) tsis tuaj yeem ua tus taw qhia tus kheej, peb yuav tsum ntxiv qhov ntsuas tsim nyog rau tus qauv hauv lub khob titration.
Aqueous Titration yog dab tsi?
Aqueous titrations yog cov txheej txheem kev tshuaj ntsuam uas peb tuaj yeem txiav txim siab txog cov khoom xav tau nyob hauv cov qauv siv dej ua cov kuab tshuaj ntawm cov qauv. Muaj ntau hom aqueous titrations uas peb tuaj yeem siv rau hauv analytical chemistry, suav nrog acid-base titrations, redox titrations, complexometric titrations, thiab nag lossis daus titrations.
Daim duab 01: Daim duab ntawm Acid-Base Titration
Type of Titration
Acid base titrations kuj muaj npe hu ua neutralization titrations, thiab peb tuaj yeem yaj cov qauv tsis paub hauv dej los txiav txim siab npaum li cas ntawm cov kua qaub / puag hauv cov qauv siv lub hauv paus / acid hauv cov burette. Feem ntau, cov kev daws teeb meem tom qab ua tiav ntawm titration yog cov tshuaj nruab nrab uas muaj pH=7.0. Ntxiv mus, ib qho ntsev feem ntau tsim.
Redox titrations yog oxidation-txo cov tshuaj tiv thaiv qhov twg tus neeg sawv cev txo qis reacts nrog tus neeg sawv cev oxidizing uas tso cai rau peb los txiav txim seb tus nqi ntawm cov khoom xav tau hauv cov qauv. Cov qauv yog nyob rau hauv lub xeev aqueous vim peb yuav tsum tau yaj nws nyob rau hauv dej.
Nyob rau hauv complexometric titrations, ib tug complex molecule cov ntaub ntawv ntawm qhov kawg ntawm lub titration. Cov tshuaj tiv thaiv tshuaj no tshwm sim hauv cov tshuaj aqueous uas ua rau peb txheeb xyuas hom tshuaj tiv thaiv no nyob rau hauv aqueous titrations.
Precipitation titration yog ib hom titration uas tsim cov khoom precipitate tshwm sim nyob rau hauv qab ntawm lub khob peb siv rau titration. Hauv hom tshuaj tiv thaiv no, cov tshuaj ntsuam xyuas yog nyob rau hauv cov tshuaj aqueous, tab sis cov precipitate uas tsim tom qab ua tiav ntawm titration yuav tsum yog insoluble hauv dej.
Yuav ua li cas thiaj tsis muaj dej titration?
Non-aqueous titrations yog cov txheej txheem analytical uas peb tuaj yeem txiav txim siab tus nqi ntawm cov khoom xav tau tam sim no hauv cov qauv siv cov kua organic ua cov kuab tshuaj rau cov qauv. Yog li, hom titrations no yog qhov tseem ceeb thaum txiav txim siab tus nqi ntawm ib qho kev ntsuas tshwj xeeb hauv cov qauv, uas yog insoluble hauv dej. Muaj ntau ntau yam uas tsis yog-aqueous titrations, xws li acid-base titrations, redox titrations, iodometry, thiab iodimetry.
Hauv cov dej tsis muaj kua qaub hauv qab titrations, tshuaj lom neeg cov tshuaj tiv thaiv tshwm sim hauv cov kuab tshuaj organic xws li glacial acetic acid. Hauv cov tshuaj tiv thaiv redox ntawm cov tsis-aqueous titration qeb, cov tshuaj tiv thaiv tshwm sim los ntawm kev siv dej-insoluble oxidizing thiab txo cov neeg ua haujlwm.
Ntxiv mus, tsis yog-aqueous titrations xws li iodometry thiab iodimetry koom nrog cov kev daws teeb meem tsis muaj dej ntawm cov qauv ntsuas. Iodometry suav nrog kev tso tawm ntawm iodine los ntawm cov tshuaj tiv thaiv sib tov, thiab iodimetry suav nrog kev siv cov qauv uas paub txog cov ntsiab lus ntawm iodine.
Qhov txawv ntawm Aqueous thiab Non-aqueous Titration yog dab tsi?
Aqueous thiab non-aqueous titrations yog cov txheej txheem analytical. Qhov sib txawv tseem ceeb ntawm aqueous thiab non-aqueous titration yog tias aqueous titrations siv dej los ua cov kuab tshuaj rau kev sib cais cov qauv tshuaj ntsuam xyuas rau cov titration, qhov uas tsis yog-aqueous titrations siv cov kuab tshuaj organic rau cov kuab tshuaj rau cov qauv.
Cov infographic hauv qab no nthuav tawm qhov sib txawv ntawm aqueous thiab non-aqueous titration hauv daim ntawv tabular.
Summary – Aqueous vs Non-aqueous Titration
Titrations yog cov txheej txheem kev tshuaj ntsuam peb tuaj yeem siv los ntsuas tus nqi ntawm cov khoom xav tau tam sim no hauv cov qauv muab. Qhov sib txawv tseem ceeb ntawm aqueous thiab non-aqueous titration yog tias aqueous titrations siv dej los ua cov kuab tshuaj rau kev sib cais cov qauv tshuaj ntsuam xyuas rau cov titration, qhov uas tsis yog-aqueous titrations siv cov kuab tshuaj organic rau cov kuab tshuaj rau cov qauv.
