Video: Cov xim pH yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pH ntsuas khiav ntawm 0 mus rau 14, nrog rau txhua tus lej muab qhov sib txawv xim . Hauv qab ntawm lub nplai zaum liab, uas sawv cev rau cov acidic tshaj plaws, thiab xiav tsaus ntawm nws qhov opposite kawg sawv cev rau 14 thiab alkalinity. Nyob rau hauv nruab nrab cheeb tsam, lub pH ntsuas ua nruab nrab. Mis muaj ib pH ntawm 6 thiab ib tug nruab nrab off-dawb xim.
Tsis tas li ntawd, cov xim dab tsi pH ntawv hloov ua kua qaub?
Xiav litmus ntawv tig liab nyob rau hauv acidic mob thiab liab litmus ntawv tig xiav nyob rau hauv tej yam kev mob los yog alkaline, nrog rau cov xim hloov nyob rau hauv lub pH ntau ntawm 4.5-8.3 ntawm 25 ° C (77 ° F). Neutral litmus ntawv yog ntshav liab.
Tom qab, lo lus nug yog, dab tsi xim sawv cev rau hauv paus? Thaum universal qhia tau ntxiv rau ib qho kev daws teeb meem, lub xim hloov tau qhia kwv yees pH ntawm cov tshuaj. Acids ua rau universal indicator solution hloov ntawm ntsuab mus rau liab. Bases ua rau universal qhia hloov ntawm ntsuab mus rau ntshav.
Kuj tseem paub yog, xim ntawm pH 7 yog dab tsi?
ntsuab
Qhov pH ntawm qhov ntsuas yog dab tsi?
pH ntsuas yog cov tsis muaj zog acids uas muaj nyob rau hauv ntuj dyes thiab qhia qhov concentration ntawm H+ (H3O +) ions hauv kev daws teeb meem ntawm kev hloov xim. A pH tus nqi yog txiav txim los ntawm qhov tsis zoo logarithm ntawm qhov concentration thiab yog siv los qhia cov kua qaub, yooj yim, lossis nruab nrab tus cwj pwm ntawm cov khoom koj tab tom sim.
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