Kev siv PH electrodes
Thaum pib, tib neeg kev paub txog acidity thiab alkalinity yog raws li qhov tsw ntawm cov zaub mov hauv lawv lub qhov ncauj, piv txwv li vinegar yog acidic, txiv qaub yog acidic, thiab lye, uas saj astringent, yog alkaline - qhov no yog qhov yooj yim thiab intuitive txoj kev uas pH los yog. acidity thiab alkalinity ua ntej tuaj txog.
Qhov concentration ntawm hydrogen ions nyob rau hauv ib tug aqueous tov yog qhia nyob rau hauv molar qhov tseem ceeb xws li ntawm 100 (1) mus rau 10-14, thiab hloov mus rau ib tug tsis zoo logarithmic scale nrog lub hauv paus ntawm 10, muab ib tug pH ntau ntawm 0-14 . pH yog ib lo lus luv luv ntawm lo lus Latin pondushydrogenii, nrog lub pas dej =siab thiab hydrogenii=hydrogen. Yog li ntawd, nws yog ib qho tseem ceeb kom nkag siab tias lub ntsiab lus meej dua ntawm pH yog qhov tsis zoo ntawm logarithm ntawm kev ua haujlwm ntawm hydrogen ions hauv cov tshuaj aqueous. Nws yog ib qho tseem ceeb kom nkag siab tias ua ntej, nws yog ib qho yooj yim kom ua tiav cov pH ntsuas hauv cov kua, thiab qhov thib ob, nws yooj yim dua kom ua tiav cov pH ntsuas hauv cov dej hauv cov dej.
Ntxiv mus, feem ntau ntawm pH [1] ntsuas hauv kev ua haujlwm txhua hnub thiab kev tsim khoom yog nyob ntawm cov kua. Piv txwv li, tib neeg noj cov zaub mov thiab tshuaj thiab feem ntau ntawm cov kua, txawm tias cov khoom kawg tsis yog kua nws qhov chaw ib puag ncig kuj yog kua, xws li tib neeg cov kua zaub mov muaj ntau ntau: cawv dawb, npias, dej haus carbonated, kua txiv hmab txiv ntoo, kas fes thiab tshuaj yej, pH tus nqi cuam tshuam qhov tsw thiab zoo ntawm cov zaub mov, pH tus nqi ntawm cov tshuaj ntau lawm yog ib qho tseem ceeb qhia. Thiab kev kuaj pH tsis yooj yim, kev lag luam kws tshuaj tsim cov tshuaj ua kua ntau dua li cov khoom siv ntau dua (yog li nws tsis yooj yim rau kev nkag siab txog qhov tseem ceeb ntawm cov dej hauv kev lag luam), cov dej muaj dej txias, dej ntxuav, dej cua sov, chav thiab hnyav. dej, thiab lwm yam, ntxiv rau qhov yuav tsum tau ua ntxiv kev tiv thaiv ib puag ncig kev kho cov dej phwj tuaj. Hauv kev tsim khoom lag luam, tom qab ntawd, cov khoom raug hloov pauv ntau yam, thiab feem ntau ntawm cov tshuaj tiv thaiv tau nrog cov kev hloov pauv hauv cov concentration ntawm hydrogen ions, yog li nws tseem ceeb tshwj xeeb los ntsuas qhov loj ntawm hydrogen ion concentration hauv cov tshuaj aqueous, piv txwv li. tus nqi pH.
Kev ntsuas pH raug tuaj yeem pab ua kom tiav:
1. Ua cov khoom peb xav tau
2. Ua tau tus nqi qis tshaj plaws
3, Tiv thaiv cov khoom puas, raug mob thiab ib puag ncig muaj kuab paug
4, kom ua tau raws li kev cai lij choj
5, Kev tshawb fawb thiab kev txhim kho ua haujlwm zoo
