Qhov Tseem Ceeb Qhov txawv - Active vs Inert Electrodes
Ib lub xov tooj ntawm tes hluav taws xob yog tsim los ntawm ob lub tshuab hluav taws xob uas hu ua electrodes thiab ib qho ionic conductor uas hu ua electrolyte. Cov electrodes thauj hluav taws xob los ntawm electrons thaum electrolytes coj lawv cov nqi los ntawm ions. Ib qho electrode yog cov hlau uas nws nto kov cov electrolyte. Electrolyte yog cov khoom tsis yog xim hlau uas tuaj yeem yog cov tshuaj los yog lub tshuab nqus tsev. Ionic compounds tsis tuaj yeem ua hluav taws xob hauv lawv daim ntawv. Yog li, lawv yuav tsum tau ua kua hauv daim ntawv txhawm rau ua hluav taws xob. Cov ntaub ntawv kua no yog cov electrolytes uas tau hais ua ntej. Tawm ntawm ob lub electrodes, ib tug ua raws li lub cathode (tsis zoo them) thiab lwm yam ua raws li lub anode (zoo them). Electrodes feem ntau yog ob hom uas yog, nquag electrodes thiab inert electrodes. Qhov sib txawv tseem ceeb ntawm cov khoom siv hluav taws xob thiab inert electrode yog tias cov khoom siv hluav taws xob muaj zog koom nrog cov tshuaj tiv thaiv tshuaj thaum inert electrode tsis koom nrog lossis cuam tshuam nrog cov tshuaj tiv thaiv tshuaj.
Dab tsi yog Active Electrode?
Active electrode yog cov hlau uas siv rau hauv cov tshuaj electrochemical. Nws koom nrog cov tshuaj tiv thaiv uas tshwm sim hauv electrolyte txhawm rau thauj cov hluav taws xob. Lub active electrode tuaj yeem oxidized los yog txo. Active electrodes feem ntau yog siv nyob rau hauv electroplating. Electroplating yog txheej txheem uas ib qho hlau siv rau ntawm lwm cov hlau nrog kev siv cov khoom siv hluav taws xob. Nyob ntawd, lub active electrode ua raws li cov anode uas muab cov cations rau cov tshuaj electrolytic. Tom qab ntawd cov cations yuav ncav cuag lub cathode thiab coj cov electrons muaj nyob rau ntawd. Qhov no ua rau lub deposition ntawm hlau ions nyob rau saum npoo ntawm lub cathode. Yog li ntawd, cov khoom uas yuav tsum tau plated los ntawm txoj kev no yog siv raws li cathode. Piv txwv li, ib rab diav tuaj yeem plated nrog nyiaj los ntawm kev siv nyiaj anode thiab rab diav raws li cathode; nyiaj nitrate yuav yog cov electrolyte.
Yeej, nquag electrode hu ua "active" vim nws nquag koom nrog cov tshuaj tiv thaiv uas tshwm sim hauv lub cev. Yog li ntawd, nws nquag pauv ions nrog cov tshuaj electrolytic. Ib qho khoom siv hluav taws xob feem ntau siv yog tooj liab electrode.
Daim duab 01: tooj liab electrode yog ib qho piv txwv ntawm cov khoom siv hluav taws xob.
Dab tsi yog Inert Electrode?
Inert electrode yog cov hlau uas tsis koom nrog lossis cuam tshuam rau cov tshuaj tiv thaiv tshuaj. Tab sis nws tseem yog siv los ua hluav taws xob los ntawm kev hloov hluav taws xob nrog kev daws teeb meem es tsis yog pauv ions nrog cov tshuaj. Yog li ntawd, nws ua hauj lwm raws li ib tug electron. Platinum yog siv los ua inert electrode. Tab sis graphite yog siv dav vim nws pheej yig. Inert electrode tuaj yeem muab lossis tshem tawm cov khoom siv hluav taws xob hauv cov txheej txheem ua hluav taws xob. Inert electrodes yeej ib txwm siv hauv electrolysis, cov txheej txheem uas cais cov ionic compound rau hauv nws cov khoom. Piv txwv li, electrolysis ntawm sodium chloride tov tsim sodium thiab chlorine nyias.
Daim duab 02: Graphite electrode yog ib qho piv txwv ntawm ib qho inert electrode.
Qhov txawv ntawm Active thiab Inert Electrodes yog dab tsi?
Active vs Inert Electrodes |
|
| Active electrode yog cov electrode uas nquag koom nrog cov tshuaj tiv thaiv ntawm cov tshuaj electrochemical. | Inert electrode yog ib qho electrode uas tsis koom nrog cov tshuaj tiv thaiv. |
| Activ electrodes yog siv hauv electroplating | Inert electrodes yog siv hauv electrolysis. |
| Kev coj cwj pwm | |
| Hlau ions ntawm cov khoom siv hluav taws xob yog yaj hauv cov tshuaj electrolytic | Hlau ions ntawm lub inert electrode tsis yaj. |
| Reacts | |
| Oxidation lossis txo cov tshuaj tiv thaiv yuav tshwm sim ntawm cov khoom siv hluav taws xob | Oxidation lossis txo cov tshuaj tiv thaiv tsis tshwm sim. |
| Txoj Kev Siv Hluav Taws Xob | |
| Cov electrodes ua hluav taws xob los ntawm kev sib pauv ion | Inert electrodes ua hluav taws xob los ntawm kev hloov hluav taws xob. |
Summary – Active vs Inert Electrodes
Electrochemical hlwb muaj peev xwm tsim hluav taws xob hluav taws xob lossis pab txhawb hluav taws xob los ntawm kev koom nrog tshuaj lom neeg. Cov khoom tseem ceeb ntawm cov khoom siv hluav taws xob yog ob lub electrodes thiab ib qho electrolyte. Ob lub electrodes raug hu ua anode thiab cathode raws li lawv tus cwj pwm. Active thiab inert electrodes yog ob hom electrodes. Qhov sib txawv tseem ceeb ntawm cov khoom siv hluav taws xob thiab inert electrode yog tias cov hluav taws xob nquag koom nrog cov tshuaj tiv thaiv tshuaj thaum inert electrode tsis koom nrog lossis cuam tshuam nrog cov tshuaj tiv thaiv tshuaj.
