Video: Qhov nce hauv pH txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev nce pH txhais tau tias OH- ions yog. d. Txo qis pH txhais tau tias OH- ions yog. Feem ntau H+ ions: pH = 4; los yog pH = 5. Teb.
Xav txog qhov no, qhov nce hauv pH yog dab tsi?
Lub logarithmic scale ntawm pH txhais tias as pH nce , H + concentration yuav txo qis los ntawm lub zog ntawm 10. Qhov kev txiav txim siab no yog vim cov nyhuv ntawm hydrogen ions (H +) thiab hydroxyl ions (OH-) ntawm pH . Qhov siab dua qhov H + concentration, qhov qis dua pH , thiab qhov siab dua OH- concentration, qhov siab dua pH.
Tsis tas li ntawd, yuav ua li cas thaum pH ntawm kev daws nce? Raws li ib tug daws tau ntau acidic (raws li [H+] nce ), cov pH txo. Raws li ib tug daws tau yooj yim dua (siab dua [OH-]), ua pH nce . Raws li cov pH ntawm kev daws nce los ntawm ib pH unit, qhov concentration ntawm OH- nce los ntawm kaum lub sij hawm.
Ib sab saum toj no, qhov hloov pauv hauv pH txhais li cas?
Ib-point pH hloov qhia tias lub zog ntawm cov kua qaub los yog lub hauv paus tau nce los yog tsawg dua kaum npaug; ib 2-point hloov qhia txog 100-fold hloov nyob rau hauv acidity los yog alkalinity, thiab ib tug 3-point hloov hauv pH qhia tias 1000-fold hloov . Piv txwv: • Ib nce pH los ntawm 7.0 rau 8.0 txhais tau tias dej yog 10 npaug ntau yooj yim.
Vim li cas cov kws tshawb fawb txhawj xeeb txog kev hloov pauv hauv pH?
Ntau yam kab mob no rhiab heev rau seemingly me me hloov pauv hauv pH . Ib tug poob ntawm 0.1 pH units nyob rau hauv tib neeg cov ntshav pH tuaj yeem ua rau muaj txiaj ntsig zoo rau kev noj qab haus huv, suav nrog qaug dab peg, lub plawv arrhythmia, lossis txawm tias tsis nco qab (tus txheej txheem hu ua acidosis).
Pom zoo:
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