Acids thiab Bases Thaum cov ionic compounds yaj hauv dej, lawv cov ions sib cais ntawm ib leeg hauv tus txheej txheem hu ua dissociation. Ib qho tseem ceeb ntawm cov dej thiab ntau lwm cov sib xyaw ua ke yog tias lawv tuaj yeem sib cais rau hauv ions.
Yuav ua li cas cov tebchaw dissociate hauv dej?
Ntau ' covalent' molecules ua dissociate hauv dej, HCl (raws li tau hais tseg hauv cov lus), phenol, acetic acid, piv txwv li, qee qhov 'ionic' compounds ua tsis muaj qhov txaus siab, e.g. nyiaj chloride, lead sulfate.
Yuav ua li cas thiaj li sib cais hauv dej?
Rau txhua lub hom phiaj siv tau, muaj zog acidstag nrho cov dej. Qhov ntawd yog lub ntsiab lus: Cov kua qaub uas muaj zog yog cov kua qaub uas ua tiav hauv dej. Peb pom tias txoj hauj lwm ntawm qhov sib npaug nyob deb mus rau sab xis.
Cov tshuaj dab tsi tuaj yeem cuam tshuam?
Cov khoom sib cais mus rau qib sib txawv, xws li cov tshuaj uas cuam tshuam me ntsis, xws li dej, rau cov uas cuam tshuam yuav luag tag, xws li cov kua qaub thiab cov hauv paus. Qhov twg ntawm cov tshuaj dissociates yog ncaj qha ntsig txog nws lub peev xwm los ua hluav taws xob tam sim no.
Yuav ua li cas cov tshuaj dissociate?
Kev sib cais tshwm sim thaum atom lossis pawg ntawm atoms tawg tawm ntawm cov molecules thiab tsim ions Xav txog cov ntsev ntsev (NaCl, lossis sodium chloride): thaum NaCl muaju ntxiv rau hauv dej, Cov molecules ntawm NaCl dissociate rau Na+ thiab Cl– ions, thiab spheres ntawm hydration nyob ib ncig ntawm cov ions.
