SJG-2083CS Online Acid Alkaline Concentration Meter

Hauv cov dej ntshiab, ib feem me me ntawm cov molecules poob ib hydrogen los ntawm H2O qauv, hauv cov txheej txheem hu ua dissociation.Cov dej yog li muaj ib tug me me ntawm hydrogen ions, H +, thiab residual hydroxyl ions, OH-.

Muaj qhov sib npaug ntawm qhov tsim tas li thiab kev sib cais ntawm ib feem me me ntawm cov dej molecules.

Hydrogen ions (OH-) hauv dej koom nrog lwm cov dej molecules los tsim hydronium ions, H3O + ions, uas yog feem ntau thiab tsuas yog hu ua hydrogen ions.Txij li cov hydroxyl thiab hydronium ions nyob hauv qhov sib npaug, cov tshuaj tsis yog acidic lossis alkaline.

Cov kua qaub yog ib yam khoom uas pub hydrogen ions mus rau hauv kev daws, thaum lub hauv paus los yog alkali yog ib qho uas siv hydrogen ions.

Txhua yam khoom uas muaj hydrogen tsis yog acidic li hydrogen yuav tsum muaj nyob rau hauv lub xeev uas yooj yim tso tawm, tsis zoo li nyob rau hauv feem ntau cov organic tebchaw uas khi hydrogen rau carbon atoms nruj heev.Lub pH yog li pab kom muaj nuj nqis ntawm lub zog ntawm cov kua qaub los ntawm kev qhia tias muaj pes tsawg hydrogen ions nws tso rau hauv cov tshuaj.

Hydrochloric acid yog ib qho muaj zog acid vim hais tias cov ionic bond ntawm hydrogen thiab cov chloride ions yog ib tug polar uas yog yooj yim yaj nyob rau hauv dej, tsim ntau hydrogen ions thiab ua rau cov tshuaj muaj zog acidic.Qhov no yog vim li cas nws muaj pH tsawg heev.Hom kev sib cais hauv dej no kuj muaj txiaj ntsig zoo ntawm kev muaj zog nce, uas yog vim li cas nws thiaj li yooj yim.

Tsis muaj zog acids yog cov tebchaw uas pub hydrogen tab sis tsis yooj yim heev, xws li qee cov organic acids.Piv txwv li, acetic acid, muaj nyob rau hauv vinegar, muaj ntau ntawm hydrogen tab sis nyob rau hauv ib tug carboxylic acid pawg, uas tuav nws nyob rau hauv covalent los yog nonpolar bonds.

Yog li ntawd, tsuas yog ib qho ntawm cov hydrogens tuaj yeem tawm ntawm cov molecule, thiab txawm li ntawd los, tsis muaj kev ruaj ntseg tau txais los ntawm kev pub dawb.

Lub hauv paus los yog alkali txais hydrogen ions, thiab thaum ntxiv rau dej, nws soaks li hydrogen ions tsim los ntawm dissociation ntawm dej thiaj li hais tias qhov nyiaj tshuav hloov nyob rau hauv txaus siab ntawm hydroxyl ion concentration, ua cov tshuaj alkaline los yog yooj yim.

Ib qho piv txwv ntawm lub hauv paus yog sodium hydroxide, los yog lye, siv los ua xab npum.Thaum cov kua qaub thiab alkali muaj nyob rau hauv qhov sib npaug ntawm cov molar ntau, cov hydrogen thiab hydroxyl ions hnov ​​​​mob nrog ib leeg, ua rau ntsev thiab dej, hauv cov tshuaj tiv thaiv hu ua neutralization.