Video: Vim li cas pH ntawm 2 tsis yog ob zaug acidic li PH ntawm 4?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txij thaum 10- 2 = (100)10- 4 , qhov concentration ntawm [H3O+] yog 100 npaug zoo li ntawm pH = 2 tshaj ntawm pH = 4 , yog li cov kua qaub yog 100 npaug li muaj zog ntawm pH = 2 tshaj ntawm pH = 4 . Qhov no yog vim pH yog ntsuas raws li lub cav tsis zoo ntawm H2 ion concentration, ua ib qho pH chav tsev 10 sib txawv ntawm H2 ion concentration.
Tsis tas li ntawd, pes tsawg zaus acidic yog pH ntawm 2 tshaj 5?
pH txhais: ib daim duab qhia txog cov acidity los yog alkalinity ntawm cov tshuaj ntawm ib tug logarithmic scale uas 7 yog nruab nrab, qis tus nqi yog ntau cov kua qaub thiab cov nqi siab dua alkaline. Cov pH yog sib npaug rau −log10 c, qhov c yog cov hydrogen ion concentration hauv moles ib liter. Yog li pH 2 yog 1000 npaug zog dua pH 5.
dab tsi muaj pH ntawm 2?
| Tus nqi pH | H+ Concentration txheeb ze rau dej ntshiab | Piv txwv |
|---|---|---|
| 0 | 10 000 000 | roj teeb kua qaub |
| 1 | 1 000 000 | gastric acid |
| 2 | 100 000 | txiv qaub kua txiv, vinegar |
| 3 | 10 000 | kua txiv kab ntxwv, dej qab zib |
Hais txog qhov no, pes tsawg zaus acidic yog ib qho kev daws nrog pH ntawm 2 dua li kev daws nrog PH ntawm 6?
Cov pH scale yog logarithmic thiab raws li qhov tshwm sim, txhua tus tag nrho pH tus nqi qis dua 7 yog kaum lub sij hawm ntau acidic dua tom ntej no siab dua tus nqi. Piv txwv li, pH 4 yog ten lub sij hawm acidic dua pH 5 thiab 100 sij hawm (10 sij hawm 10) acidic ntau dua pH 6.
Yuav ua li cas muaj pes tsawg zaus ntau tshaj pH ntawm 12 piv rau PH ntawm 8?
A pH ua 7o10 sij hawm ntau acidic tshaj ib pH ntawm 8 , thiab 100 sij hawm ntau acidic tshaj ib pH ntawm 9. Conversely, a pH ntawm 8 yog 10 sij hawm yooj yim dua dua ib pH ntawm 7, thiab 100 sij hawm yooj yim dua dua ib pH ntawm 6.
Pom zoo:
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