Video: Dab tsi txiav txim siab lub zog ntawm cov kua qaub lossis lub hauv paus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov siab dua qhov dissociation tas li lub zog kua qaub los yog puag . Txij li thaum electrolytes raug tsim raws li ions tau tso rau hauv cov tshuaj muaj kev sib raug zoo ntawm cov lub zog ntawm ib tug acid , a puag , thiab cov electrolyte nws tsim. Cov kua qaub thiab hauv paus ntsuas pH ntsuas.
Kuj paub, dab tsi txiav txim siab lub zog ntawm cov kua qaub?
Ib kua qaub tau txais nws cov yam ntxwv los ntawm hydrogen atoms ntawm nws cov molecules. Muaj pes tsawg ntawm cov hydrogen atoms dissociate thiab tsim hydrogen ions txiav txim siab lub zog ntawm cov kua qaub . Muaj zog kua qaub plam feem ntau lossis tag nrho lawv cov hydrogen atoms hauv cov kua dej thiab tsim H3O ions nrog tus nqi zoo.
Qhov thib ob, lub zog ntawm lub hauv paus yog dab tsi? Lub hauv paus muaj zog ntawm ib hom yog nws lub peev xwm txais H+ los ntawm lwm hom (saib, Brønsted-Lowry txoj kev xav). Qhov ntau dua qhov peev xwm ntawm ib hom kev txais H+ los ntawm lwm hom, ntau dua nws puag lub zog . Qhov muaj zog acid, qhov tsis muaj zog ntawm conjugate puag , thiab vice versa.
Kuj paub, lub zog ntawm cov kua qaub thiab lub hauv paus txiav txim siab li cas?
Qhov twg ib kua qaub , HA, pub protons rau dej molecules nyob ntawm qhov zog ntawm lub conjugate puag , A−, ntawm kua qaub . Yog A− yog ib tug qaug zog puag , dej khi cov protons ntau zog, thiab cov tshuaj muaj feem ntau A− thiab H3O+- cov kua qaub muaj zog.
Dab tsi yog 7 lub zog acids?
Muaj 7 lub zog acids: chloric acid, hydrobromic acid , hydrochloric acid, hydroiodic acid, nitric acid, perchloric acid, thiab sulfuric acid. Ua ib feem ntawm cov npe ntawm cov kua qaub uas muaj zog tsis muaj qhov qhia txog qhov txaus ntshai lossis ua rau cov kua qaub puas.
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
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
Koj pom li cas pH ntawm qhov sib npaug ntawm cov kua qaub thiab lub hauv paus muaj zog?
Ntawm qhov sib npaug, qhov sib npaug ntawm H + thiab OH- ions yuav sib xyaw ua H2O, ua rau pH ntawm 7.0 (tsis nruab nrab). Lub pH ntawm qhov sib npaug ntawm qhov sib npaug ntawm qhov titration yuav ib txwm yog 7.0, nco ntsoov tias qhov no tsuas yog muaj tseeb rau titration ntawm cov kua qaub muaj zog nrog lub hauv paus muaj zog
Cov piv txwv ntawm tsev neeg cov kua qaub thiab cov hauv paus yog dab tsi?
Daim ntawv teev cov tsev Bases & Acids Baking Soda. Baking soda yog lub npe nrov rau sodium bicarbonate, paub tshuaj raws li NaHCO3. Diluted Soaps. Tsev neeg Ammonia. Tsev Neeg Vinegar. Citric Acid
Yuav ua li cas koj txiav txim siab uas cov kua qaub muaj zog raws li pKa?
Siv "Lub zog tsis muaj zog ntawm cov kua qaub, lub zog ntawm lub hauv paus Conjugate" kom tau txais lub zog ntawm cov hauv paus los ntawm lub rooj pKa. Ntawm no yog lub hauv paus ntsiab lus tseem ceeb: Qhov kev txiav txim ntawm lub hauv paus lub zog yog qhov hloov pauv ntawm acid zog. Qhov tsis muaj zog acid, qhov muaj zog ntawm conjugate puag