Video: PH ntawm h3o yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov concentration ntawm hydronium ion tuaj yeem pom los ntawm cov pH los ntawm qhov thim rov qab ntawm kev ua lej ua haujlwm ua haujlwm kom pom cov pH . [ H3O+ ] = 10- pH los yog [ H3O+ ] = antilog (- pH ) Piv txwv: Dab tsi yog qhov hydronium ion concentration hauv cov tshuaj uas muaj a pH ua 8,34!
Kuj tseem paub yog, yog h3o yog lub hauv paus lossis acid?
Cov H3O+ yog conjugate kua qaub ntawm H2O. Yog li H3O+ yog siv raws li ib tug shorthand rau ib tug proton nyob rau hauv aqueous tov. Hauv cov tshuaj uas tsis yog-aqueous, proton yuav tsim cov qauv sib txawv. Qhia tau tias H2O yog tsim los ntawm qhov sib npaug H + thiab OH- ions thiab yog amphoteric (yuav ua tau ib qho kua qaub los yog a puag ) muaj daim ntawv deprotonated (OH-).
Kuj Paub, koj nrhiav pH li cas? Cov mis rau pH yog pH = -log[H+]. Qhov no txhais tau tias pH yog lub hauv paus tsis zoo 10 logarithm ("log" ntawm lub tshuab xam zauv) ntawm hydrogen ion concentration ntawm cov tshuaj. Rau xam nws, coj lub cav ntawm hydrogen ion concentration thiab thim rov qab kos npe kom tau txais cov lus teb.
Yog li ntawd, kuv yuav xam pH li cas?
Rau xam pH Ntawm cov tshuaj aqueous koj yuav tsum paub qhov concentration ntawm hydronium ion hauv moles ib liter (molarity). Cov pH Tom qab ntawd suav nrog kev qhia: pH = - log [H3O+].
Puas yog pH tsis zoo?
Nws yog twv yuav raug hu ua laib a pH tsis zoo tus nqi. Hauv kev xyaum, txhua cov kua qaub uas ua rau muaj qhov concentration ntawm hydrogen ions nrog molarity ntau dua 1 yuav raug suav kom muaj pH tsis zoo . Piv txwv li, lub pH ntawm 12M HCl (hydrochloric acid) yog xam los ua -log(12) = -1.08.
Pom zoo:
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