Video: Yuav ua li cas koj txiav txim siab uas cov kua qaub muaj zog raws li pKa?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Siv qhov Lub Weaker The Acid , Cov Muaj zog dua Lub Conjugate Puag ” Txoj Cai Kom Tau Txais Lub Zog Ntawm Lub hauv paus los ntawm A pKa Rooj. Nov yog lub hauv paus ntsiab lus tseem ceeb: Qhov kev txiav txim ntawm puag lub zog yog inverse ntawm kua qaub zog. Lub weaker lub kua qaub , cov muaj zog dua lub conjugate puag.
Hauv qhov no, cov kua qaub puas muaj pKa siab lossis qis?
Re: pKa thiab nws txoj kev sib raug zoo nrog npaum li cas acidic ib yam dab tsi yog -> 10^- pKa = Ka. A qis pka txhais tau tias tus nqi Ka yog siab dua thiab a siab dua Ka nqi txhais tau tias kua qaub dissociates yooj yim dua vim nws muaj ib Qhov loj dua concentration ntawm Hydronium ions (H3O+).
tus nqi pKa txhais li cas? Cov ntsiab lus tseem ceeb: pKa txhais Cov pKa nqi yog ib txoj kev siv los qhia lub zog ntawm cov kua qaub. pKa yog lub cav tsis zoo ntawm cov kua qaub dissociation tas li los yog Ka tus nqi . Ib qho qis pKa nqi qhia tias muaj zog acid. Ntawd yog, qis dua tus nqi qhia tias cov kua qaub ntau dissociates hauv dej.
Kuj tseem paub yog, pKa formula yog dab tsi?
pKa yog txhais li -log10 Ka qhov twg Ka = [H+[A-] / [HA]. Los ntawm cov kab lus no nws muaj peev xwm muab tau Henderson-Hasselbalch kev sib npaug uas yog. pKa = pH + log [HA] / [A-] Qhov no qhia peb tias thaum pH = pKa then log [HA] / [A-] = 0 so [HA] = [A-] piv txwv li qhov sib npaug ntawm ob daim ntawv.
PKa ntawm 7 txhais li cas?
pKa <3 yog rau cov kua qaub muaj zog. 3
7 yog rau qaug zog acid. 7
Pom zoo:
Koj puas ntxiv cov kua qaub rau hauv lub hauv paus lossis lub hauv paus rau cov kua qaub?
Ntxiv cov kua qaub ua kom cov concentration ntawm H3O + ions hauv cov tshuaj. Ntxiv ib lub hauv paus txo cov concentration ntawm H3O + ions hauv cov tshuaj. Cov kua qaub thiab lub hauv paus zoo li cov tshuaj tiv thaiv. Yog hais tias lub hauv paus yog ntxiv rau cov kua qaub, cov tshuaj yuav tsis acidic thiab txav mus rau nruab nrab ntawm pH nplai
Dab tsi txiav txim siab lub zog ntawm cov kua qaub lossis lub hauv paus?
Qhov siab dua qhov dissociation tas li lub zog acid lossis puag. Txij li cov electrolytes raug tsim raws li ions tau tso rau hauv cov tshuaj muaj kev sib raug zoo ntawm lub zog ntawm cov kua qaub, lub hauv paus, thiab cov electrolyte nws tsim. Cov kua qaub thiab cov hauv paus yog ntsuas los ntawm kev ntsuas pH
Yuav ua li cas koj txiav txim siab npaum li cas ntawm cov kua qaub uas yuav tsum tau neutralize lub hauv paus?
Kev daws qhov teeb meem Acid-Base Neutralization Kauj Ruam 1: Muab xam cov moles ntawm OH-. Molarity = moles / ntim. moles = Molarity x Volume. moles OH- = 0.02 M/100 milliliters. Kauj ruam 2: Xam qhov ntim ntawm HCl xav tau. Molarity = moles / ntim. Volume = moles/molarity. Volume = moles H+/0.075 Molarity
Yuav ua li cas koj txiav txim siab uas yog tus nqi txiav txim kauj ruam?
Tus nqi txiav txim siab kauj ruam yog kauj ruam qeeb tshaj plaws ntawm cov tshuaj tiv thaiv tshuaj uas txiav txim siab qhov nrawm (tus nqi) uas tag nrho cov tshuaj tiv thaiv ua tiav. Teb Tus nqi txiav txim kauj ruam yog kauj ruam thib ob vim nws yog kauj ruam qeeb. 2NO + 2H2 → N2 + 2H2O. Cov intermediates hauv cov tshuaj tiv thaiv no yog N2O2 thiab N2O
Yuav ua li cas tshwm sim yog tias koj tov cov kua qaub uas muaj zog sib npaug?
Yuav ua li cas tshwm sim yog tias koj tov cov kua qaub uas muaj zog sib npaug? Koj yuav pom cov tshuaj tiv thaiv tawg. Cov kua qaub yuav rhuav tshem lub hauv paus. Lub hauv paus yuav rhuav tshem cov kua qaub