Video: Dab tsi yog qhov sib npaug taw tes hauv qhov nkhaus titration?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
(Hauv cov kua qaub-puag titration , muaj 1: 1 acid: puag stoichiometry, yog li cov qhov sib npaug yog taw tes qhov twg moles ntawm titrant ntxiv sib npaug cov moles ntawm cov khoom pib hauv kev daws teeb meem titrated .) Daim ntawv ceeb toom tias cov pH nce maj mam thaum xub thawj, tom qab ntawd sai li nws nyob ze sib npaug point.
Ua raws li qhov no hauv kev xav, dab tsi yog qhov sib npaug ntawm qhov kev sib tw?
Cov sib npaug point yog taw tes rau hauv titration qhov twg tus lej ntawm titrant ntxiv yog txaus los ua kom tiav qhov nruab nrab ntawm kev tshuaj xyuas. Cov moles ntawm titrant (tus qauv daws teeb meem) sib npaug cov moles ntawm cov tshuaj uas tsis paub meej. Qhov kawg yog hais txog qhov taw tes ntawm qhov ntsuas qhia hloov xim.
Tom qab ntawd, lo lus nug yog, vim li cas qhov titration nkhaus steepest ntawm qhov sib npaug? Nyob ze sib npaug point , kev hloov pauv ntawm ib qho ntawm 10 tshwm sim sai heev, uas yog vim li cas daim duab tsis tshua muaj neeg pom ntxhab ntawm no taw tes . Raws li qhov hydronium ion concentration dhau mus qis heev, nws yuav rov siv ntau lub hauv paus los txhawm rau nce hydroxide ion concentration los ntawm 10 npaug los hloov pH tseem ceeb.
Ib yam li ntawd, koj yuav nrhiav tau qhov sib npaug ntawm qhov nkhaus titration li cas?
Nyob rau nkhaus , cov qhov sib npaug yog nyob qhov twg daim duab yog ntxhab tshaj plaws. Muaj kev hloov pauv sai thiab sai ntawm pH nyob ib ncig ntawm qhov no taw tes , uas tuaj yeem pom los ntawm kev hloov xim hloov chaw thaum lub sijhawm titration . Ntawm sib npaug point , ICE rooj yuav tsum tau txiav txim siab ntim thiab acidity.
Kwv yees li ntawm pH ntawm qhov sib npaug ntawm qhov nkhaus?
Titration nkhaus rau qaug zog acid v qaug zog Nws tshwm sim hais tias ob qho tib si yog hais txog qhov tsis muaj zog sib npaug - nyob rau hauv cov ntaub ntawv no, lub qhov sib npaug yog kwv yees pH 7.
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