pH thiab pOH pH thiab pOH Hauv chemistry, pH (/piːˈeɪtʃ/, keeb kwm denoting "muaj peev xwm ntawm hydrogen" los yog "lub zog ntawm hydrogen") yog ib nplai siv los qhia cov acidity lossis theem pib ntawm Cov tshuaj aqueous … Ntawm 25 ° C, cov kev daws teeb meem nrog pH tsawg dua 7 yog acidic, thiab cov kev daws teeb meem nrog pH ntau dua 7 yog qhov yooj yim. https://en.wikipedia.org › wiki
pH - Wikipedia
qhia txog qhov tsis zoo ntawm cov ntsiab lus ntawm hydrogen lossis hydroxide ions hydroxide ions Hydroxide yog diatomic anion nrog tshuaj formula OH -Nws muaj cov pa oxygen thiab hydrogen atom tuav ua ke los ntawm ib daim ntawv cog lus ib leeg, thiab nqa cov nqi hluav taws xob tsis zoo. Nws yog ib qho tseem ceeb tab sis feem ntau me me ntawm cov dej. Nws ua haujlwm raws li lub hauv paus, ligand, nucleophile, thiab catalyst. https://en.wikipedia.org › wiki › Hydroxide
Hydroxide - Wikipedia
. High pH txhais tau hais tias kev daws yog qhov yooj yim thaum pOH siab txhais tau tias uas cov tshuaj yog acidic. Cov kev daws teeb meem nruab nrab muaj pH thiab pOH ntawm 7.
Koj paub li cas yog pOH yog acidic lossis yooj yim?
Txhais pH thiab pOH. Txiav txim siab pH ntawm acidic thiab yooj yim daws. Txiav txim siab qhov concentration ntawm hydronium ion thiab pOH los ntawm pH.
K paub qhov kev vam khom ntawm pH ntawm [H3O+], peb tuaj yeem xaus raws li hauv qab no:
- Yog pH < 7, ces cov tshuaj yog acidic.
- Yog pH=7, ces cov tshuaj yog nruab nrab.
- Yog pH > 7, ces qhov kev daws yog yooj yim.
POH puas zoo ib yam li pH?
The pOH nplai zoo ib yam li pH nplaihauv qhov pOH ntawm 7 yog qhov qhia txog kev daws teeb meem nruab nrab. Ib qho kev daws teeb meem yooj yim muaj pOH tsawg dua 7, thaum cov kua qaub muaj pOH ntau dua 7. Cov pOH yooj yim siv thaum nrhiav cov hydroxide ion concentration los ntawm cov tshuaj uas muaj pH paub.
POH 12 acidic?
Ib qho yooj yim tov muaj pOH tsawg dua 7, hos cov kua qaub muaj ib tug pOH ntau dua 7.
pH ntawm pOH yog 12 yog dab tsi?
Cov lus teb raug yog (b) 2 . Tus pH nplai yog siv los ntsuas seb acidic los yog ib qho kev daws teeb meem.
