Puas muaj zog npaum li cas yog cov kua qaub los yog cov hauv paus daws teeb meem?
Puas muaj zog npaum li cas yog cov kua qaub los yog cov hauv paus daws teeb meem?

Video: Puas muaj zog npaum li cas yog cov kua qaub los yog cov hauv paus daws teeb meem?

Video: Puas muaj zog npaum li cas yog cov kua qaub los yog cov hauv paus daws teeb meem?
Video: Npau Suav li no Txhob coj mus tham qhia luag lwm tus 2024, Kaum ib hlis
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Qhov ntau ntawm 0 txog 14 muab qhov ntsuas ntawm qhov sib piv ntawm lub zog kua qaub thiab kev daws teeb meem . Dej ntshiab thiab lwm yam nruab nrab kev daws teeb meem muaj pH tus nqi ntawm 7. Tus nqi pH tsawg dua 7 qhia tias qhov daws yog acidic , thiab tus nqi pH ntau dua 7 qhia tias qhov daws yog yooj yim.

Nyob rau hauv txoj kev no, muaj zog npaum li cas yog cov kua qaub lossis cov ntsiab lus hauv chav kawm 10?

Ib yam li ntawd hauv paus ua rau ntau OH- ions yog lub hauv paus muaj zog hos cov uas ua rau kom tsawg OH-ions raug hu ua qaug zog hauv paus . Salts ib muaj zog acid thiab a lub hauv paus muaj zog yog nruab nrab nrog tus nqi pH ntawm 7. Cov ntsev ntawm muaj zog acid thiab qaug zog puag yog acidic nrog pH tus nqi tsawg dua 7.

Tsis tas li ntawd, lub zog ntawm cov kua qaub yog dab tsi? Acid zog hais txog qhov nyiam ntawm ib qho kua qaub , cim los ntawm cov tshuaj formula HA, kom dissociate rau hauv ib tug proton, H+, thiab anion, A. HA ⇌ H+ + A. Acetic kua qaub (CH3COOH) yog ib qho piv txwv ntawm tus qaug zog kua qaub . Cov zog ntawm qaug zog kua qaub yog quantified los ntawm nws kua qaub dissociation tas li, pKa tus nqi.

Ntawm no, dab tsi ua rau acid zog lossis qaug zog?

A qaug zog acid yog ib kua qaub uas ib nrab dissociates rau hauv nws ions nyob rau hauv ib tug aqueous tov los yog dej. Piv txwv li, a muaj zog acid tag nrho dissociates rau hauv nws cov ions hauv dej. Nyob rau tib lub concentration, tsis muaj zog acids muaj pH ntau dua muaj zog acids.

Lub Fullform ntawm pH yog dab tsi?

PH stands rau Potential ntawm Hydrogen. Nws yog hais txog hydrogen ion concentration hauv cov tshuaj. Nws yog qhov ntsuas ntawm acidity los yog alkalinity ntawm cov kua. Cov PH tus nqi yog li ntawm 0 txog 14 ntawm a pH nplai.

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