Qhov Tseem Ceeb - Ionization vs Dissociation
Ionization thiab dissociation yog ob txheej txheem tseem ceeb hauv chemistry. Ionization thiab dissociation feem ntau tsis meej pem, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm dissolving ntawm ionic compounds. Ib tug yuav xav tias dissolving ionic tebchaw ua rau ionization txij li thaum ionic compounds yaj nyob rau hauv dej, ua nqi hais los yog ions. Tab sis qhov no yog ib qho piv txwv ntawm dissociation txij li thaum ionic compounds twb tau ua tawm ntawm ions. Yog li, qhov sib txawv tseem ceeb ntawm ionization thiab dissociation yog tias ionization yog tsim cov ions tshiab los ntawm kev nce lossis poob ntawm electron whereas dissociation yog kev sib cais lossis kev sib cais ntawm ions uas twb muaj nyob hauv ib qho chaw.
Ionization yog dab tsi?
Ionization yog cov txheej txheem uas tsim cov atom los yog cov molecule los ntawm kev nce lossis poob ntawm ib qho hluav taws xob. Cov txheej txheem no tsim cov khoom siv hluav taws xob. Hauv cov txheej txheem no, hluav taws xob nruab nrab atoms dhau los ua cov khoom siv hluav taws xob. Cov nqi no tuaj yeem yog qhov zoo lossis tsis zoo. Qhov ntawd yog nyob ntawm qhov nce lossis poob ntawm ib qho hluav taws xob. Yog hais tias ib qho atom los yog ib lub molecule poob ib qho hluav taws xob, nws yuav dhau los ua qhov zoo thaum nws tau txais ib qho hluav taws xob los ntawm sab nraud, nws yuav dhau los ua qhov tsis zoo. Ionization txheej txheem feem ntau yog irreversible, uas txhais tau hais tias, yog hais tias ib tug atom los yog molecule tau txais ib tug electron, nws tsis tso cov electron rov qab; Yog hais tias lub atom poob ib tug electron, nws yuav tsis coj ib tug electron rov qab. Qhov ntawd tshwm sim thaum poob lossis nce ntawm cov hluav taws xob no ua rau muaj kev ruaj khov ion, uas ua raws li txoj cai octet.
Qee lub sij hawm lub sij hawm ionization tau tsis meej pem nrog dissociation. Yog hais tias ib qho ionic compound xws li sodium chloride (NaCl) raug txiav txim siab, nws yuav tsim ions thaum yaj hauv dej. Txawm hais tias qhov no tsim ions, qhov no tsis yog ionization. Txij li cov khoom NaCl raug faib ua nws cov ions lossis lawv cov ionic bonds tawg, nws tsis tuaj yeem hu ua ionization. Yog li, kev sib cais ntawm daim ntawv cog lus ionic tsis yog txheej txheem ionization vim tias ib qho hluav taws xob twb tau muab rau ib lub atom los ntawm lwm lub atom thiab tsuas yog ib qho electrostatic attraction xwb. Yog li, nws tuaj yeem hais tias cov tebchaw uas muaj ionic bonds yuav tsis koom nrog ionization. Txawm hais tias cov ionic tebchaw tsis tuaj yeem raug ionization, covalent compounds muaj covalent bonds ntawm cov atoms tuaj yeem ua rau cov txheej txheem ionization. Qhov no yog vim hais tias electron sib koom tshwm sim nyob rau hauv covalent daim ntawv cog lus thiab ionization ntawm cov tebchaw yuav tsim cov nqi tshiab uas tsis tuaj nyob rau hauv lub yav dhau los compound. Tab sis ionization tsuas yog tshwm sim hauv polar covalent tebchaw uas muaj atoms nrog qhov sib txawv ntawm electronegativity. Txwv tsis pub, ionization yuav tsis tshwm sim vim muaj zog covalent bonding. Ionization kuj tshwm sim hauv cov hlau. Nyob rau ntawd, zoo them hlau ions yog tsim los ntawm tso electrons los ntawm hlau atoms.
Daim duab 01: Ionization
Dissociation yog dab tsi?
Dissociation hais txog kev tawg lossis sib cais ntawm cov khoom sib xyaw ua cov khoom me me. Cov txheej txheem dissociation tuaj yeem ua rau cov khoom siv hluav taws xob los yog nruab nrab. Qhov no tsis cuam tshuam qhov nce lossis poob ntawm electrons los ntawm cov atoms. Tsis zoo li ionization txheej txheem, dissociation yog 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 muaj ob lub molecules ntawm NO2 Cov txheej txheem dissociation yog thim rov qab feem ntau ntawm lub sijhawm. Qhov no txhais tau tias, sib cais ions tuaj yeem rov npaj los tsim cov khoom qub dhau los. Piv txwv li, raws li tau hais los saum 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.
Daim duab 02: Kev sib cais ntawm Sodium Chloride hauv dej
Qhov txawv ntawm Ionization thiab Dissociation yog dab tsi?
Ionization vs Dissociation |
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| Ionization yog txheej txheem uas tsim cov khoom tshiab. | Dissociation yog kev sib cais ntawm cov nqi them uas twb muaj nyob hauv ib qho chaw. |
| pib sib xyaw | |
| Ionization suav nrog cov polar covalent compounds lossis hlau | Dissociation koom nrog ionic compounds. |
| khoom | |
| Ionization ib txwm tsim cov khoom them nqi | Kev sib cais ua rau cov khoom siv hluav taws xob lossis hluav taws xob tsis zoo. |
| txheej txheem Ionization yog irreversible. | Kev sib cais yog thim rov qab. |
| Bonds | |
| Ionization koom nrog covalent bonds ntawm atoms | Dissociation koom nrog ionic bonds hauv cov tebchaw. |
Summary – Ionization vs Dissociation
Ionization thiab dissociation yog ob txoj kev sib txawv. Yog li ntawd, nws tseem ceeb heev kom nkag siab qhov sib txawv ntawm ob txoj kev no. Qhov sib txawv tseem ceeb ntawm ionization thiab dissociation yog tias dissociation yog cov txheej txheem ntawm kev sib cais ntawm cov nqi them uas twb muaj nyob rau hauv lub compound whereas ionization yog tsim ntawm cov nqi tshiab uas tsis tuaj nyob rau hauv lub yav dhau los compound.
