Video: Dab tsi ua rau acid acid thiab ib puag ncig?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib kua qaub yog ib yam khoom uas pub hydrogen ions. Vim li no, thaum ib kua qaub yog yaj hauv dej, qhov sib npaug ntawm hydrogen ions thiab hydroxide ions hloov. Qhov kev daws teeb meem no yog acidic . A puag yog ib yam khoom uas txais hydrogen ions.
Thiab cov lus nug yog, dab tsi yog ib qho acid thiab lub hauv paus?
Hauv qhov kev xav no, ib kua qaub yog ib yam khoom uas tso tau ib tug proton (xws li nyob rau hauv lub Arrhenius txoj kev xav) thiab a puag yog ib yam khoom uas yuav txais tau ib tug proton. Ib qho yooj yim ntsev, xws li Na+F-, generates OH- ions hauv dej los ntawm kev noj cov protons ntawm dej nws tus kheej (kom HF): F−(aq) + H2O(l)⇌HF(aq) + OH−
Qhov thib ob, puas yog cov kua qaub puas tau los ua lub hauv paus lossis puas yog lub hauv paus puas tau ua kua qaub? Feem ntau, thaum peb dilute ib kua qaub los yog a puag , pH ib txwm txav mus rau pH tus nqi ntawm 7 - nruab nrab. Ib kua qaub yeej tsis ua ib lub hauv paus tsis yog puas lub hauv paus puas tau ua ib qho acid.
Tsuas yog li ntawd, koj tuaj yeem qhia cov kua qaub los ntawm lub hauv paus li cas?
Rau txiav txim seb ib yam khoom yog ib qho kua qaub los yog a puag , suav cov hydrogens ntawm txhua yam khoom ua ntej thiab tom qab cov tshuaj tiv thaiv. Yog hais tias tus naj npawb ntawm hydrogens tau txo cov tshuaj no kua qaub (paub hydrogen ions). Yog hais tias tus naj npawb ntawm hydrogens tau nce cov khoom ntawd yog qhov puag (txais hydrogen ions).
Yuav ua li cas dej yog acid thiab ib puag ncig?
Dej tuaj yeem ua raws li ob qho tib si acid thiab base nyob rau hauv kev daws thiab undergoes autoionization qhov twg nws tuaj yeem yog ob qho tib si acid thiab base rau nws tus kheej. Thaum tov nrog ib tug kua qaub , dej txais hydrogen ions thiab ua raws li ib tug puag . Txawm li cas los xij, thaum dej yog mix a puag , nws pub hydrogen ions thiab ua zoo li ib qho kua qaub.
Pom zoo:
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