Oxidation Reaction vs Reduction Reaction
Oxidation thiab txo cov tshuaj tiv thaiv muaj kev cuam tshuam. Qhov twg ib yam khoom yog oxidized lwm yam khoom txo. Yog li ntawd, cov tshuaj tiv thaiv no tau koom ua ke hu ua redox tshuaj tiv thaiv.
Oxidation Reaction
Keeb kwm oxidation cov tshuaj tiv thaiv raug txheeb xyuas raws li cov tshuaj tiv thaiv uas muaj cov pa oxygen koom nrog. Ntawm no, cov pa oxygen ua ke nrog lwm cov molecule los tsim cov oxide. Hauv cov tshuaj tiv thaiv no, cov pa oxygen txo qis thiab lwm yam khoom siv oxidation. Yog li ntawd, qhov yooj yim oxidation cov tshuaj tiv thaiv yog ntxiv oxygen rau lwm yam khoom. Piv txwv li, hauv cov tshuaj tiv thaiv hauv qab no, hydrogen raug oxidation thiab, yog li ntawd, oxygen atom ntxiv rau hydrogen ua dej.
2H2 + O2 -> 2H2O
Lwm txoj hauv kev los piav txog oxidation yog qhov poob ntawm hydrogen. Muaj qee lub sijhawm uas nws nyuaj los piav txog oxidation li ntxiv oxygen. Piv txwv li, hauv qab no cov tshuaj tiv thaiv oxygen tau ntxiv rau cov pa roj carbon thiab hydrogen tab sis tsuas yog cov pa roj carbon tau dhau los oxidation. Hauv qhov no, oxidation tuaj yeem piav qhia los ntawm kev hais tias nws yog qhov poob ntawm hydrogen. Raws li hydrogens tau tshem tawm ntawm methane thaum tsim cov pa roj carbon dioxide, carbon tau raug oxidized.
CH4 + 2O2 -> CO2 + 2H 2O
Lwm txoj hauv kev los piav txog oxidation yog poob ntawm electrons. Txoj hauv kev no tuaj yeem siv los piav qhia txog tshuaj lom neeg, qhov twg peb tsis tuaj yeem pom kev tsim oxide lossis hydrogen poob. Yog li, txawm tias tsis muaj oxygen, peb tuaj yeem piav qhia oxidation siv txoj hauv kev no. Piv txwv li hauv cov tshuaj tiv thaiv hauv qab no, magnesium tau hloov mus rau magnesium ions. Txij li thaum, magnesium tau poob ob lub electrons nws tau dhau oxidation thiab chlorine gas yog tus neeg sawv cev oxidizing.
Mg + Cl2 -> Mg2+ + 2Cl–
Oxidation xeev pab txheeb xyuas cov atoms uas tau dhau los oxidation. Raws li IUPAC txhais, oxidation lub xeev yog "ib qho kev ntsuas ntawm oxidation ntawm ib qho atom hauv cov khoom. Nws txhais tau hais tias tus nqi ntawm atom yuav xav txog kom muaj. " Oxidation lub xeev yog tus lej suav, thiab nws tuaj yeem yog qhov zoo, tsis zoo lossis xoom. Oxidation lub xeev ntawm ib lub atom yuav raug hloov raws li tshuaj tiv thaiv. Yog hais tias lub xeev oxidation nce, ces lub atom yog hais tias yuav oxidized. Raws li cov tshuaj tiv thaiv saum toj no, magnesium muaj xoom oxidation xeev thiab magnesium ion muaj +2 oxidation xeev. Txij li thaum tus lej oxidation tau nce, magnesium tau oxidized.
Kev Txom Nyem
Kev txo qis yog qhov sib txawv ntawm oxidizing. Nyob rau hauv cov nqe lus ntawm kev hloov oxygen, hauv kev txo qis, cov pa oxygen ploj. Nyob rau hauv cov nqe lus ntawm kev hloov hydrogen, kev txo qis tshwm sim tshwm sim thaum tau txais hydrogen. Piv txwv li, hauv qhov piv txwv saum toj no ntawm methane thiab oxygen, oxygen tau txo qis vim nws tau txais hydrogen. Nyob rau hauv cov nqe lus ntawm kev hloov hluav taws xob, kev txo qis yog nce electrons. Yog li raws li qhov piv txwv saum toj no, chlorine txo qis.
Dab tsi yog qhov txawv ntawm Oxidation Reaction thiab Reduction Reaction?
• Hauv cov tshuaj tiv thaiv oxidation, oxygens tau txais thiab, hauv kev txo qis, oxygens ploj.
• Hauv oxidation hydrogen ploj tab sis hauv kev txo hydrogen tau txais.
• Hauv cov tshuaj tiv thaiv oxidation, electrons ploj tab sis, hauv kev txo qis, electrons tau txais.
• Hauv cov tshuaj tiv thaiv oxidation, lub xeev oxidation tau nce. Cov hom kev txo qis txo lawv lub xeev oxidation.
