Video: Thaum twg muaj zog acid yog titrated nrog lub hauv paus tsis muaj zog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Titration ntawm a tsis muaj zog puag nrog a muaj zog acid . Hauv ib tsis muaj zog puag - muaj zog acid titration , cov kua qaub thiab puag yuav teb rau daim ntawv acidic daws. Ib conjugate kua qaub yuav raug tsim thaum lub sij hawm titration , uas ces reacts nrog dej los tsim hydronium ions. Qhov no ua rau muaj kev daws teeb meem nrog pH qis dua 7.
Tsis tas li ntawd, thaum lub zog acid yog titrated nrog lub hauv paus tsis muaj zog pH ntawm qhov sib npaug?
Cov sib npaug point hauv titration ntawm ib lub zog kua qaub los yog muaj zog puag tshwm sim ntawm pH 7.0 ib. Hauv titrations ntawm tsis muaj zog acids los yog tsis muaj zog hauv paus , txawm li cas los xij, cov pH ntawm qhov sib npaug yog ntau dua los yog tsawg dua 7.0, feem.
Ib tug kuj yuav nug, uas yog qhov zoo tshaj plaws kev xaiv rau qaug zog acid titration? Yog hais tias ib qho tshuaj qhia tau siv-methyl txiv kab ntxwv yuav yog xaiv zoo nyob rau hauv cov ntaub ntawv no - nws hloov los ntawm nws qhov pib mus rau nws acidic xim. Titration ntawm a tsis muaj zog puag nrog a muaj zog acidA depiction ntawm pH hloov thaum lub sij hawm a titration ntawm HCl daws rau hauv ammonia daws.
Raws li txoj cai, koj puas tuaj yeem titrate lub hauv paus muaj zog nrog cov kua qaub tsis muaj zog?
Hauv titration ntawm a qaug zog acid nrog a lub hauv paus muaj zog , lub conjugate puag ntawm tsis muaj zog acid yuav ua kom pH ntawm qhov sib npaug ntawm qhov sib npaug ntau dua 7. Yog li ntawd, koj yuav xav tau ib qho taw qhia kom hloov pauv ntawm qhov pH.
Puas yog NaOH lub hauv paus muaj zog lossis tsis muaj zog?
Sodium hydroxide ( NaOH ) yog lub hauv paus muaj zog vim nws tag nrho dissociates hauv dej los tsim hydroxide ions. Thaum ammonia (NH3) yog tsis muaj zog puag vim tias nws txais cov protons los ntawm dej los tsim cov hydroxide ions tsawg dua hauv cov tshuaj. Thaum tsis muaj zog hauv paus tsim cov hydroxide ions tsawg dua, ua rau kev daws teeb meem tsawg dua.
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 tshwm sim thaum koj sib tov ib tug muaj zog acid nrog ib tug tsis muaj zog puag?
Hom 2: thaum muaj zog acid / base reacts nrog lub hauv paus tsis muaj zog / acid yog hydronium thiab hydroxyl ions tam sim no nyob rau hauv sib npaug amt ces ntsev thiab dej yog tsim thiab lub zog tso tawm uas tsawg tshaj li 57 kj / mole vim lub dissociation ntawm lub tsis muaj zog acid / puag uas feem ntau endothermic
Puas muaj zog acid thiab qaug zog hauv paus ua rau tsis muaj?
Raws li koj tau pom hauv kev suav cov pH ntawm cov kev daws teeb meem, tsuas yog ib qho me me ntawm cov kua qaub uas muaj zog heev yog qhov tsim nyog los hloov pH. Ib qho tsis yog tsuas yog sib xyaw ntawm cov kua qaub tsis muaj zog thiab nws lub hauv paus conjugate lossis lub hauv paus tsis muaj zog thiab nws cov conjugate acid. Buffers ua hauj lwm los ntawm reacting nrog ib qho ntxiv acid los yog hauv paus tswj pH
Pawg ua haujlwm twg yog lub hauv paus tsis muaj zog?
Amines, ib qho nruab nrab nitrogen nrog peb daim ntawv cog lus rau lwm cov atoms (feem ntau yog carbon lossis hydrogen), yog cov pab pawg ua haujlwm zoo hauv cov organic tsis muaj zog hauv paus
Vim li cas thiaj xav tau ntau lub hauv paus los ua kom tsis muaj zog acid?
Ib qho tsis muaj zog acid dissociates rau hauv H + thiab nws lub hauv paus conjugate, uas tsim ib qho tsis. Qhov no tiv thaiv kev hloov pauv yog pH thiab xav tau ntau lub hauv paus los ua kom tsis muaj zog. Ntxiv cov kua qaub tsis muaj zog rau dej tsis tsim kom muaj qhov tsis zoo ntawm nws tus kheej. Yog li nws tuaj yeem zoo li cov kua qaub tsis muaj zog xav tau ntau lub hauv paus, vim tias pH nce qeeb qeeb