Nqe Lus Nug: Thaum titrating ib qho tsis muaj zog monoprotic acid nrog NaOH ntawm 25 ° C,pH yuav ntau dua 7 ntawm qhov sib npaug ntawm qhov sib npaug ntawm qhov sib npaug, lossis stoichiometric point, ntawm cov tshuaj tiv thaiv tshuaj. yog lub ntsiab lus ntawm cov tshuaj sib npaug ntawm cov tshuaj reactants tau tov. … Qhov kawg (xws li, tab sis tsis zoo ib yam li qhov sib npaug taw tes) yog hais txog qhov taw tes uas qhov taw qhia hloov xim hauv cov xim titration. https://en.wikipedia.org › wiki › Equivalence_point
Equivalence point - Wikipedia
. titration yuav xav tau ntau moles ntawm cov kua qaub tshaj lub hauv paus kom ncav cuag qhov sib npaug. pH yuav sib npaug rau 7 ntawm qhov sib npaug. pH yuav tsawg dua 7 ntawm qhov sib npaug.
Thaum titrating acetic acid nrog sodium hydroxide ntawm 25 C lub A pH yuav tsawg tshaj li 7 ntawm qhov sib npaug point B pH yuav sib npaug rau 7 ntawm qhov sib npaug point C pH yuav ntau dua 7 ntawm qhov sib npaug point D titration yuav?
Nqe Lus Nug: Thaum titrating acetic acid nrog sodium hydroxide ntawm 25 ° C, titration yuav xav tau cov kua qaub ntau dua li lub hauv paus kom ncav cuag qhov sib npaug. O pH yuav tsawg dua 7 ntawm qhov sib npaug. O pH yuav muab sib npaug rau 7 ntawm qhov sib npaug.
Qhov twg yog qhov tseeb qhov sib npaug ntawm qhov nyiaj?
Thaum qhov sib npaug, pH ib txwm yog 7. Qhov sib npaug yog qhov tus nqi ntawm cov kua qaubsib npaug tus nqi ntawm lub hauv paus thaum lub sij hawm ib qho acid-base titration.
Vim li cas qhov titration ntawm cov kua qaub tsis muaj zog nrog lub hauv paus muaj zog ib txwm muaj qhov sib npaug ntawm qhov tseem ceeb yog vim li cas qhov titration ntawm cov kua qaub tsis muaj zog nrog lub hauv paus muaj zog ib txwm muaj qhov sib npaug ntawm qhov sib npaug ntawm lub hauv paus tau tag nrho. hloov mus rau hauv nws conjugate?
Thaum cov kua qaub tsis muaj zog ua rau lub hauv paus muaj zog ces nws ua rau tsim cov tshuaj daws teeb meem. Yog li ntawd, cov tshuaj uas tshwm sim yuav ib txwm muaj pH ntau dua 7. … Yog li ntawd, pH ntawm cov tshuaj yuav yog li ntawm 7. Yog li ntawm qhov sib npaug ntawm qhov sib npaug, lub tsis muaj zog acid yuav tau neutralized vim qhov sib ntxiv ntawm cov hauv paus muaj zog.
Dab tsi yog qhov tseeb ntawm qhov sib npaug?
A) Qhov sib npaug ntawm qhov sib npaug yog qhov tus lej ntawm cov kua qaub sib npaug ntawm cov moles ntawm lub hauv paus thaum lub sijhawm cov kua qaub-piv titration. Nco qab tias ntawm qhov sib npaug, cov moles ntawm cov kua qaub yuav ALWAYS sib npaug rau moles ntawm lub hauv paus. Yog li ntawd, qhov no yog qhov tseeb.
