SJG-2083CS Online Acid Alkaline Concentration Meter

Hauv dej ntshiab, ib feem me me ntawm cov molecule poob ib qho hydrogen ntawm cov qauv H2O, hauv cov txheej txheem hu ua dissociation. Yog li ntawd, cov dej muaj cov hydrogen ions me me, H+, thiab cov hydroxyl ions seem, OH-.

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

Cov hydrogen ions (OH-) hauv dej koom nrog lwm cov dej molecule los tsim cov hydronium ions, H3O+ ions, uas feem ntau hu ua hydrogen ions. Vim tias cov hydroxyl thiab hydronium ions no nyob hauv qhov sib npaug, cov tshuaj tsis yog acidic lossis alkaline.

Ib qho kua qaub yog ib yam khoom uas pub cov hydrogen ions rau hauv cov kua, thaum lub hauv paus lossis alkali yog ib qho uas noj cov hydrogen ions.

Txhua yam khoom uas muaj hydrogen tsis yog acidic vim tias hydrogen yuav tsum muaj nyob rau hauv lub xeev uas yooj yim tso tawm, tsis zoo li feem ntau cov organic compounds uas khi hydrogen rau cov carbon atoms nruj heev. Yog li ntawd, pH pab ntsuas lub zog ntawm cov kua qaub los ntawm kev qhia tias nws tso tawm ntau npaum li cas rau hauv cov kua.

Hydrochloric acid yog ib qho kua qaub muaj zog vim tias qhov sib txuas ntawm cov hydrogen thiab cov chloride ions yog ib qho polar uas yooj yim yaj hauv dej, tsim ntau cov hydrogen ions thiab ua rau cov tshuaj muaj zog heev. Qhov no yog vim li cas nws muaj pH qis heev. Hom kev sib cais no hauv dej kuj zoo heev rau kev nce zog, yog vim li cas nws thiaj li tshwm sim yooj yim heev.

Cov kua qaub tsis muaj zog yog cov tshuaj uas pub hydrogen tab sis tsis yooj yim, xws li qee cov kua qaub organic. Piv txwv li, acetic acid, pom muaj nyob rau hauv vinegar, muaj ntau hydrogen tab sis nyob rau hauv ib pawg carboxylic acid, uas tuav nws nyob rau hauv covalent lossis nonpolar bonds.

Yog li ntawd, tsuas yog ib qho ntawm cov hydrogens thiaj li tawm hauv lub molecule, thiab txawm tias yog li ntawd, tsis muaj kev ruaj khov ntau los ntawm kev pub nws.

Ib lub hauv paus lossis alkali txais cov hydrogen ions, thiab thaum ntxiv rau hauv dej, nws nqus cov hydrogen ions tsim los ntawm kev sib cais ntawm dej kom qhov sib npaug hloov pauv mus rau qhov kev sib xyaw ntawm hydroxyl ion, ua rau cov tshuaj alkaline lossis basic.

Ib qho piv txwv ntawm cov khoom siv sib xws yog sodium hydroxide, lossis lye, siv rau hauv kev ua xab npum. Thaum cov kua qaub thiab cov alkali muaj nyob rau hauv cov concentration sib npaug zos, cov hydrogen thiab hydroxyl ions ua ke yooj yim ua ke, tsim cov ntsev thiab dej, hauv qhov kev sib xyaw hu ua neutralization.