Video: Dab tsi yog qhov txawv ntawm cov kua qaub thiab cov hauv paus ntawm pH nplai?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov txawv nruab nrab acids thiab bases . Ntsiab txawv : Acids thiab bases yog ob hom corrosive. Tej yam khoom nrog pH tus nqi nruab nrab 0 txog 7 yog suav tias yog acidic , yog a pH tus nqi ntawm 7 txog 14 yog a puag . Cov kua qaub yog ioniccompounds uas tawg sib nrug hauv dej los tsim ib hydrogen ion (H +).
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog cov kua qaub thiab lub hauv paus ntawm pH nplai?
Cov pH ntsuas ntsuas li cas acidic los yog cov ntsiab lus tseem ceeb yog. Cov pH ntsuas thaj tsam li ntawm 0 mus rau 14. A pH ntawm 7 yog nruab nrab. A pH tsawg dua 7 acidic . A pH ntau dua 7 yog qhov yooj yim.
Tsis tas li ntawd, acids thiab bases txawv ntawm ib leeg li cas? Txawm tias hauv paus yog qhov sib txawv raws li lawv iab, feem ntau tsis muaj ntxhiab (tshwj tsis yog ammonia), lawv yog nplua; hauv paus react nrog rog thiab roj. Cov kua qaub dissociate togive dawb hydrogen ions (H+) thaum sib tov hauv dej, whereas hauv paus dissociate kom pub dawb hydroxide ions (OH–) thaum sib tov hauv dej.
Hais txog qhov no, dab tsi yog lub hauv paus ntawm pH nplai?
Cov pH ntsuas feem ntau hais rau ntau los ntawm 0 txog 14, thiab cov kev daws teeb meem feem ntau poob hauv qhov no ntau , txawm tias yuav tau txais ib pH qis dua 0 lossis siab dua 14. Txhua yam hauv qab 7.0 yog acidic, thiab txhua yam saum toj no 7.0 yog alkaline, lossis yooj yim.
Puas yog NaOH yog cov kua qaub lossis lub hauv paus?
NaOH , los yog sodium hydroxide , yog ib qho compound. A compound yog cais raws li ib qho kua qaub , puag , lus. Tag nrho hauv paus muaj OH- (hydroxide) ions, thaum tag nrho kua qaub muaj H + (hydrogen) ions. Ib qho ntsev yog qhov sib xyaw ua ke uas tsim thaum a puag thiab ib kua qaub ua ke vim lawv neutralize ib leeg.
Pom zoo:
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