Cov txheej txheem:
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev daws teeb meem Acid-Base Neutralization
- Kauj ruam 1: Xam tus lej ntawm moles ntawm OH-. Molarity = moles/ ntim . moles = Molarity x Ntim . moles OH- = 0.02 M / 100 ml.
- Kauj ruam 2: Xam qhov ntim ntawm HCl xav tau . Molarity = moles/ ntim . Ntim = moles/molarity. Ntim = moles H+/ 0.075 Molarity.
Ib yam li ntawd, nws yog nug, ua li cas koj neutralize lub hauv paus muaj zog?
Siv ib tug qaug zog acid rau neutralize puag . Piv txwv xws li sodium hydroxide, potassium hydroxide, thiab ammonia. Muaj ntau yam khoom sib txawv pab hauv lub neutralization ntawm acids thiab hauv paus . Lawv tuaj yeem ua tau yooj yim li ib lub hnab ntawm citric acid lossis sodium sesquicarbonate, los yog ua haujlwm raws li cov khoom siv thiab cov khoom nruab nrab ua ke.
Tsis tas li ntawd, nws puas siv ntau lub hauv paus los ua kom cov kua qaub muaj zog? Muaj zog acids yuav neutralize lub hauv paus muaj zog ntawm qhov sib npaug ntawm qhov sib npaug ntawm qhov sib npaug. Ntau ntim ntawm qaug zog kua qaub yog xav tau neutralize lub hauv paus muaj zog yog hais tias cov concentrations sib npaug thiab vise versa rau qaug zog hauv paus thiab muaj zog acids . Ib qho tsis yog ib qho kev daws teeb meem uas muaj qhov tsis muaj zog kua qaub thiab ntsev nrog tib lub anion li tus kua qaub.
Yog li ntawd, yuav tsum muaj pes tsawg moles ntawm NaOH kom tsis txhob muaj cov kua qaub?
1 Teb. Koj xav tau 3 mol ntawm sodium hydroxide rau neutralize 1 mol ntawm phosphoric kua qaub.
Thaum ua cov tshuaj acidic yooj yim Yuav ua li cas qhov no yuav ua tau?
Ntxiv ib kua qaub nce qhov concentration ntawm H3O+ ions nyob rau hauv daws . Ntxiv ib puag txo qhov concentration ntawm H3O+ ions nyob rau hauv daws . Ib kua qaub thiab a base yog zoo li chemical opposites. Yog ib puag yog ntxiv rau ib kua qaub , cov daws ua tsawg acidic thiab tsiv mus rau nruab nrab ntawm lub pH nplai.
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
Vim li cas nws tseem ceeb heev uas yuav tsum xav txog ntau yam thaum txiav txim siab cov hauv paus hniav ntawm cov kab zauv polynomial?
Piv txwv li, tus naj npawb ntawm lub sij hawm ib tug muab polynomial sib npaug muaj ib lub hauv paus ntawm ib tug muab point yog lub multiplicity ntawm lub hauv paus. Qhov kev xav ntawm ntau qhov tseem ceeb yog qhov tseem ceeb kom suav tau kom raug yam tsis muaj kev qhia tshwj xeeb (piv txwv li, ob lub hauv paus suav ob zaug). Li no cov lus qhia, ' suav nrog ntau ntau'
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 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