Video: Dab tsi yog qhov qaug zog acid thiab muaj zog puag tsim?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
ntsev a tsis muaj zog acid thiab muaj zog puag undergoes hydrolysis hauv dej rau tsim khoom ntxiv OH- ions. Txij li acetic kua qaub yog a qaug zog acid , nws tseem unionized nyob rau hauv kev daws thiab cov OH-ions ua cov tshuaj yooj yim los yog alkaline. Ib yam li ntawd, ntsev ntawm a muaj zog acid thiab tsis muaj zog puag yog acidic nyob rau hauv aqueous tov.
Ua raws li qhov no hauv kev xav, yuav ua li cas tshwm sim thaum lub zog acid tsis muaj zog nrog lub hauv paus muaj zog?
A qaug zog acid yuav react nrog lub hauv paus muaj zog los tsim ib qho yooj yim (pH> 7) tov.
Tom qab, lo lus nug yog, dab tsi yog qhov muaj zog acid thiab muaj zog puag tsim? Hauv a muaj zog acid - muaj zog hauv paus titration , cov kua qaub thiab base yuav react los tsim ib qho kev daws teeb meem. Ib qho piv txwv ntawm qhov no yuav ua tus titration ntawm hydrochloric kua qaub ( muaj zog acid thiab sodium hydroxide ( lub hauv paus muaj zog ) los tsim sodium chloride thiab dej. Tsim los ntawm Jay.
Ua raws li qhov no hauv kev xav, dab tsi yog qhov tsis muaj zog acid thiab lub hauv paus tsis muaj zog tsim?
Cov tshuaj tiv thaiv nruab nrab yog thaum kua qaub thiab a puag react tsim dej thiab ntsev thiab koom nrog kev sib xyaw ntawm H + ions thiab OH- ions los tsim dej.
Dab tsi qhia yog siv rau qaug zog acid thiab muaj zog puag?
Qhov pH ntau ntawm phenolphthalein yog li ntawm 8.3 txog 10.0, tab sis qhov titration nkhaus yog qhov tob heev ntawm qhov sib npaug ntawm qhov sib npaug. phenolphthalein ua qhov taw qhia zoo. Rau qhov muaj zog hauv paus-tsis muaj zog acid titration, qhov sib npaug taw tes yog nyob ze pH 9. Phenolphthalein yog qhov zoo rau qhov titration no.
Pom zoo:
Dab tsi yog qhov muaj zog thiab qaug zog acid piav nrog piv txwv?
Cov kua qaub muaj zog sib cais (sib cais) tag nrho hauv dej). Piv txwv li, HCl, cov kua qaub muaj zog yuav tawg mus rau H + thiab Cl-ions. Cov acids tsis muaj zog dissociate ib nrab hauv dej. Piv txwv li, HF, cov kua qaub tsis muaj zog, tsuas yog yuav muaj qee yam ntawm HF cov molecules sib cais thaum twg los tau
Puas yog ib txwm mus dhau qhov kev qaug dej qaug cawv?
Zoo, yog tias koj tau nrog koj lwm tus tseem ceeb ib ntus, cov lus teb luv luv yog: Yog. Cov ntawv qhuav qhuav yog qhov qub, thiab tsis muaj dab tsi los ntxhov siab txog. Obviously, hais tias yooj yim dua li ua, tab sis feem ntau, ib tug qhuav spell tsis yog ib txwm txhais tau tias koj thiab koj tus khub tsis muaj attraction rau ib leeg
Yuav ua li cas tshwm sim thaum koj titrate ib tug muaj zog acid nrog ib tug muaj zog puag?
Lub hom phiaj ntawm lub zog acid-muaj zog hauv paus titration yog los txiav txim siab qhov concentration ntawm acidic tov los ntawm titrating nws nrog ib tug yooj yim tov ntawm paub concentration, los yog vice versa, kom txog thaum neutralization tshwm sim. Yog li ntawd, cov tshuaj tiv thaiv ntawm cov kua qaub thiab lub hauv paus muaj zog yuav ua rau dej thiab ntsev
Piv txwv li, muaj zog acid thiab qaug zog acid yog dab tsi?
Piv txwv ntawm cov acids muaj zog yog hydrochloric acid (HCl), perchloric acid (HClO4), nitric acid (HNO3) thiab sulfuric acid (H2SO4). Cov kua qaub tsis muaj zog tsuas yog qee qhov sib cais, nrog rau ob qho tib si undissociated acid thiab nws cov khoom dissociation tam sim no, nyob rau hauv kev daws, nyob rau hauv equilibrium nrog ib leeg
Vim li cas cov duab ntawm titration nkhaus txawv rau titration ntawm muaj zog acid vs muaj zog puag thiab qaug zog acid vs muaj zog puag?
Cov duab dav dav ntawm titration nkhaus yog tib yam, tab sis pH ntawm qhov sib npaug sib txawv. Hauv qhov tsis muaj zog acid-muaj zog titration, pH yog ntau dua 7 ntawm qhov sib npaug. Hauv qhov muaj zog acid-tsis muaj zog titration, pH tsawg dua 7 ntawm qhov sib npaug