Qhov sib txawv tseem ceeb ntawm kev sib cais thiab kev daws teeb meem yog qhov kev sib cais yog kev tawg ntawm cov khoom mus rau hauv cov atoms lossis ions los ntawm cov tshuaj uas yog tsim los ntawm qhov kev daws teeb meem yog kev sib cais ntawm cov khoom hauv cov kuab tshuaj vim muaj kev sib zog sib zog ntawm cov kuab tshuaj molecules thiab cov khoom ntawm cov khoom.
Kev sib cais thiab kev daws teeb meem feem ntau pom muaj nyob rau hauv analytical chemistry thiab inorganic chemistry, hais txog kev tawg ntawm cov tshuaj lom neeg thaum sib txawv ntawm cov atoms thiab ions hauv cov khoom.
Dissociation yog dab tsi?
Lub sij hawm dissociation yog hais txog kev tawg lossis sib cais ntawm cov khoom sib xyaw rau hauv cov khoom me me. Cov txheej txheem dissociation tsim cov khoom uas yog hluav taws xob los yog nruab nrab. Qhov ntawd txhais tau tias; Cov khoom ntawm dissociation tuaj yeem yog ionic lossis non-ionic. Txawm li cas los xij, qhov no tsis cuam tshuam qhov nce lossis poob ntawm electrons los ntawm atoms.
Daim duab 01: Kev sib cais ntawm BrOH Molecule
Nyob rau hauv kev sib piv rau cov txheej txheem ntawm ionization, dissociation muaj kev sib cais ntawm ions uas twb muaj nyob rau hauv ib tug compound. Qee zaum, kev sib cais kuj tseem tuaj yeem tsim cov khoom nruab nrab-piv txwv li, kev tawg ntawm N2O4 ua rau tsim ob lub molecules ntawm NO. 2 Cov txheej txheem kev sib cais yog thim rov qab feem ntau. Qhov ntawd txhais tau hais tias, cov ions sib cais tuaj yeem rov teem dua los tsim cov khoom qub dhau los. Piv txwv li, raws li tau hais los saum toj no, kev sib cais ntawm NaCl yog txheej txheem kev sib cais, thiab nws tsim ob qhov khoom siv. Tab sis, cov khoom NaCl tuaj yeem rov qab tau nrog cov xwm txheej zoo, uas ua pov thawj tias kev sib cais yog thim rov qab. Tsis zoo li ionization, dissociation tshwm sim nyob rau hauv ionic compounds.
Kev daws yog dab tsi?
Kev daws yog qhov kev sib cais ntawm cov khoom hauv ib qho hnyav. Qhov kev daws teeb meem tshwm sim vim yog lub zog attraction ntawm molecules ntawm cov kuab tshuaj thiab cov kuab tshuaj molecules. Feem ntau, lub zog attraction koom nrog hauv cov txheej txheem no yog ion-dipole bonds thiab hydrogen bonding attractions. Cov kev ntxim nyiam no ua rau kev sib cais ntawm cov kuab tshuaj hauv cov kuab tshuaj.
Daim duab 02: Kev daws ntawm Sodium Chloride Ionic Compound hauv dej
Kev sib cuam tshuam ion-dipole tuaj yeem pom ntawm cov ionic compounds thiab cov kuab tshuaj polar. E.g. dej yog ib tug polar solvent. Thaum sodium chloride ntxiv rau hauv dej, cov polar dej molecules nyiam cov sodium ions thiab chloride ions cais, uas ua rau cov sodium thiab chloride ions tawg. Qhov no ua rau kev tawg ntawm sodium chloride ionic compound.
Dab tsi yog qhov sib txawv ntawm Kev Txiav Txim Siab thiab Kev Txiav Txim?
Kev sib cais thiab kev daws teeb meem yog cov ntsiab lus uas piav qhia txog qhov sib txawv ntawm cov khoom sib txawv li cas rau hauv cov khoom me me lossis atoms / ion nyob ntawm kev sib cuam tshuam. Qhov sib txawv tseem ceeb ntawm kev sib cais thiab kev daws teeb meem yog tias dissociation yog kev tawg ntawm ib yam khoom mus rau hauv cov atoms los yog ions los ntawm cov khoom uas yog ua los ntawm whereas kev daws yog lub dissolution ntawm ib yam khoom nyob rau hauv ib tug hnyav vim lub attraction rog ntawm hnyav molecules thiab cov khoom. ntawm cov khoom.
Cov ntawv qhia hauv qab no qhia ntau qhov sib txawv ntawm kev sib cais thiab kev daws teeb meem.
Summary – Dissociation vs Solvation
Qhov sib txawv tseem ceeb ntawm kev sib cais thiab kev daws teeb meem yog qhov kev sib cais yog kev tawg ntawm ib yam khoom mus rau hauv atoms lossis ions los ntawm cov khoom siv los ntawm qhov kev daws teeb meem yog kev sib cais ntawm cov khoom nyob rau hauv cov kuab tshuaj vim yog lub zog ntawm attraction ntawm Cov kuab tshuaj molecules thiab cov khoom ntawm cov khoom.
