Video: Vim li cas qhov ntsuas methyl txiv kab ntxwv siv hauv NaOH thiab Naoh titration?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Qhov no yog vim tias qhov kawg ntawm kev ntxiv alkali coj cov pH ntawm cov tshuaj hauv thaj tsam uas phenolphthalein qhia tau ntse hloov xim . Hauv titration muaj zog acid thiab lub hauv paus tsis muaj zog, methyl txiv kab ntxwv raug xaiv raws li qhia.
Ib yam li ntawd, qhov ntsuas twg yog qhov haum rau kev ntsuas ntawm HCl thiab NaOH thiab vim li cas?
Methyl txiv kab ntxwv
Tseem Paub, qhov ntsuas ntsuas twg yog siv hauv titration ntawm NaOH thiab h2so4? phenolphthalein
Raws li, vim li cas methyl txiv kab ntxwv tsis haum raws li qhov ntsuas rau titration ntawm HX nrog sodium hydroxide?
Methyl txiv kab ntxwv yog ib qhia nrog pH ntau ntawm 3.1-4.4. Nws yog tsis a qhov qhia tau zoo rau qhov nruab nrab cov tshuaj tiv thaiv nruab nrab ntawm cov tsis muaj zog oxalic acid (H2C2O4 H 2 C 2 O 4), thiab muaj zog hauv paus sodium hydroxide (NaOH N A O H) vim tias nws cov pH ntau tsis suav nrog qhov sib npaug taw tes pH (~ 8) rau cov tshuaj tiv thaiv.
Lwm qhov ntsuas puas tuaj yeem siv rau titration ntawm NaOH nrog sulfuric acid?
Cov qhia phenolphthalein yog paj yeeb hauv kev daws teeb meem thiab tsis muaj xim hauv kua qaub kev daws teeb meem Kev daws teeb meem rau titration ntawm sulfuric kua qaub nrog NaOH hloov pauv los ntawm acidic ( qhia tsis muaj xim) rau qhov yooj yim ( qhia liab dawb) ntawm qhov kawg. Ntawm qhov kawg qhov kev daws teeb meem yog qhov yooj yim me ntsis thaum tus neeg thuam yog lub hauv paus.
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