Video: Dab tsi muaj pH qib 7?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nws txhais li cas rau kev daws kom acidic lossis yooj yim (alkaline)?
| Tus nqi pH | H+ Concentration txheeb ze rau dej ntshiab | Piv txwv |
|---|---|---|
| 5 | 100 | kas fes dub, txiv tsawb |
| 6 | 10 | tso zis, tej |
| 7 | 1 | dej ntshiab |
| 8 | 0.1 | dej hiav txwv, qe |
Hais txog qhov no, dab tsi muaj pH ntawm 7?
A pH ntawm 7 yog nruab nrab. A pH tsawg dua 7 yog acidic. A pH loj dua 7 yog qhov yooj yim.
Ib yam li ntawd, dab tsi muaj pH siab? Kev daws nrog a siab tus naj npawb ntawm hydrogen ions yog acidic thiab muaj qis tus nqi pH . Kev daws nrog a siab tus naj npawb ntawm hydroxide ions yog yooj yim thiab muaj tus nqi pH siab . Cov pH scale ranges ntawm 0 mus rau 14, nrog rau a pH ntawm 7 ua nruab nrab.
Tib neeg kuj nug, yog dej tib yam khoom uas muaj pH ntawm 7?
Ntshiab dej muaj qhov nruab nrab pH . Ntshiab dej muaj ib pH , ntawm 7 , uas tsis yog acidic lossis yooj yim. Cov dej Lub cev muaj zog: Dej yog tshwj xeeb hauv qhov nws yog nkaus xwb ntuj yam khoom uas muaj nyob rau hauv tag nrho peb lub xeev - kua, khoom (ice), thiab roj (chaw) - nyob rau hauv qhov kub thiab txias ib txwm pom nyob rau hauv lub ntiaj teb no.
Vim li cas pH ntawm dej 7?
pH yog ib qho kev ntsuas ntawm tus nqi ntawm Hydrogen ions (H +) hauv kev daws. Txawm nyob rau hauv ntshiab dej ions zoo li tsim los ntawm cov txheej txheem random (ua qee qhov H + thiab OH- ions). Tus nqi ntawm H + uas tau ua hauv ntshiab dej yog hais txog sib npaug a pH ntawm 7 . Yog vim li cas 7 yog nruab nrab.
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