Qhov sib txawv tseem ceeb ntawm kev tsim qauv thiab kev sib tw yog cov txheej txheem kev tsim qauv siv cov qauv thawj, qhov txheej txheem titration tsis tseem ceeb siv cov qauv thawj.
Standardization thiab titration yog cov ntsiab lus tseem ceeb uas peb siv hauv analytical chemistry. Standardization kuj yog txheej txheem titration, tab sis tsis yog tag nrho cov titrations yog cov txheej txheem txheem. Txawm hais tias lawv siv tib txoj kev los ntsuas qhov ntsuas, lawv cov ntawv thov txawv ntawm ib leeg.
Standardization yog dab tsi?
Standardization yog cov txheej txheem kev tshuaj xyuas peb siv los nrhiav qhov tsis paub txog kev siv cov txheej txheem thawj lossis cov txheej txheem thib ob. Cov txheej txheem feem ntau siv rau kev ntsuas kev daws teeb meem yog titration. Rau cov txheej txheem standardization, yuav tsum muaj kev daws teeb meem raws li kev siv. Cov txheej txheem kev daws teeb meem tuaj nyob rau hauv ob hom kev daws teeb meem thawj zaug thiab cov txheej txheem thib ob. Rau qhov tseeb standardizations, peb siv cov txheej txheem kev daws teeb meem. Cov kev daws teeb meem no suav nrog cov purity siab.
Daim duab 01: Acid thiab Base Titration
Thaum peb ua cov tshuaj uas siv cov tshuaj sib xyaw ua ke. Qhov kawg concentration ntawm cov tshuaj yuav txawv nyob ntawm ntau yam xws li purity ntawm cov compound, instrumental yuam kev, tib neeg yuam kev, thiab lwm yam. Piv txwv li, yog hais tias peb xav ua ib tug 1.0 molL-1 kev daws ntawm EDTA, peb tuaj yeem ntsuas qhov tsim nyog tus nqi uas yuav tsum tau ua rau kev npaj thiab yaj nws nyob rau hauv ib qho chaw ntim dej.
Qhov hnyav yuav tsum tau suav nrog siv cov ntaub ntawv muab rau ntawm lub raj mis. Tab sis qhov no yuav tsis muab qhov tseeb concentration peb xav tau. Yog li ntawd, tom qab kev npaj cov tshuaj, peb yuav tsum standardize siv tus txheej txheem txheej txheem los nrhiav qhov tseeb concentration ntawm cov npaj tov.
Titration yog dab tsi?
Titration yog cov txheej txheem tshuaj xyuas peb tuaj yeem siv los txiav txim siab qhov concentration ntawm qee hom tshuaj hauv cov tshuaj. Peb tuaj yeem ua qhov titration siv ib qho kev daws teeb meem uas muaj qhov paub txog qhov concentration. Tsis zoo li hauv kev tsim qauv, cov kev daws teeb meem uas muaj kev paub txog qhov tseem ceeb tsis yog qhov tseem ceeb lossis kev daws teeb meem thib ob. Nws tuaj yeem yog ib qho kev daws teeb meem uas muaj kev paub txog concentration. Ib qho titration yog ua los ntawm ib qho cuab yeej tshwj xeeb. Nws muaj burette, burette sawv ntsug thiab titration flask.
Lub burette feem ntau muaj cov qauv kev daws teeb meem nrog kev paub txog concentration lossis lwm yam kev daws teeb meem uas muaj kev paub txog concentration. Yog tias nws tsis yog ib qho kev daws teeb meem, peb yuav tsum tsim cov qauv kev daws teeb meem hauv burette siv tus qauv thawj. Lub titration flask muaj cov qauv uas muaj cov tshuaj tiv thaiv uas tsis paub meej. Yog hais tias tus qauv kev daws teeb meem (hauv burette) tsis tuaj yeem ua tus taw qhia tus kheej, peb yuav tsum ntxiv qhov ntsuas qhov tsim nyog rau tus qauv hauv lub khob titration.
Daim duab 02: Xim Hloov hauv Titration txheej txheem
Tom qab ntawd, cov txheej txheem kev daws teeb meem yog ntxiv rau lub khob maj mam kom txog thaum muaj xim hloov. Cov xim hloov hauv lub khob titration qhia qhov kawg ntawm qhov titration. Txawm hais tias nws tsis yog qhov tseeb ntawm qhov kawg ntawm qhov kev sib tw, peb tuaj yeem coj nws los ua qhov sib npaug ntawm qhov sib npaug vim tsuas muaj qhov sib txawv me ntsis.
Tsis tas li ntawd, peb tuaj yeem siv qhov kev nyeem ntawv burette los nrhiav tus nqi ntawm cov qauv kev daws teeb meem uas cuam tshuam nrog cov qauv. Tom qab ntawd los ntawm kev siv tshuaj tiv thaiv thiab kev sib raug zoo ntawm stoichiometric, peb tuaj yeem txiav txim siab qhov tsis paub.
Qhov txawv ntawm Standardization thiab Titration yog dab tsi?
Standardization thiab titration yog cov ntsiab lus tseem ceeb uas peb siv hauv analytical chemistry. Standardization kuj yog txheej txheem titration, tab sis tsis yog tag nrho cov titrations yog cov txheej txheem txheem. Qhov sib txawv tseem ceeb ntawm standardization thiab titration yog cov txheej txheem standardization siv cov qauv tseem ceeb, hos cov txheej txheem titration tsis tseem ceeb siv cov qauv tseem ceeb. Nyob rau hauv standardization, cov tshuaj nyob rau hauv lub burette yog thawj los yog theem nrab txheej txheem tov, thaum titration muaj ib tug standardized tov.
Cov hauv qab no qhia txog qhov sib txawv ntawm kev tsim qauv thiab kev sib tw.
Summary – Standardization vs Titration
Standardization thiab titration yog cov ntsiab lus tseem ceeb uas peb siv hauv analytical chemistry. Standardization kuj yog txheej txheem titration, tab sis tsis yog tag nrho cov titrations yog cov txheej txheem txheem. Qhov sib txawv tseem ceeb ntawm kev ua qauv thiab titration yog cov txheej txheem kev tsim qauv siv cov qauv qauv, qhov txheej txheem titration tsis tseem ceeb siv cov qauv thawj.
