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Video: Koj pom kw hauv chemistry li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15
Kev txhais ntawm pH thiab pOH
- Ua ntej sib tham txog pH peb yuav tsum nkag siab txog tus cwj pwm sib npaug ntawm dej.
- Kw = [H3O+][OH-] = [H+][OH-] = 1.001x10-14 (ntawm 25 oC, Kw yog kub nyob ntawm)
- Hauv dej ntshiab [H+] = [OH-] = 1.00x10-7 M.
- pH yog ib daim ntawv luv luv rau -log [H +] thiab pOH yog cov ntawv luv luv rau -log[OH-].
Ntxiv mus, dab tsi yog tus qauv rau kW hauv chemistry?
Qhov no tas li, Kw , yog hu ua dej autoprotolysis tas li lossis dej autoionization tas li. (Qee lub sij hawm lub prefix auto poob, raws li tau ua tiav hauv lub npe ntawm ntu no.) Nws tuaj yeem txiav txim siab los ntawm kev sim thiab muaj tus nqi 1.011 x 10¯14 ntawm 25 ° C. Feem ntau, tus nqi ntawm 1.0 x 10¯14 yog siv.
Ib yam li ntawd, tus nqi ntawm kW ntawm 25 _firxam_#8728 yog dab tsi; C? Cov tus nqi Kw ntawm 25 qib Celsius 1 x 10 − 14 1 × 10 − 14. Kw yog ib qho piv txwv ntawm qhov sib npaug.
Yog li ntawd, kW sib npaug li cas?
Lub kilowatt-teev yog ib chav tsev sib xyaw ntawm lub zog sib npaug ib kilowatt ( kW ) lub zog txhawb nqa rau ib teev. Qhia nyob rau hauv tus qauv chav tsev ntawm lub zog nyob rau hauv lub International System of Units (SI), lub joule (cim J), nws yog sib npaug 3600 kilojoules (3.6 MJ).
Dab tsi yog ionisation tas li?
Kev kho mob txhais ntawm ionization tsis tu ncua :ib tas li uas nyob ntawm qhov sib npaug ntawm cov ions thiab cov molecules uas tsis yog ionized nyob rau hauv ib tug tov los yog kua -cim K. - hu ua kuj dissociation tas li.
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