Ib daim duab Ellingham yog a daim duab qhia qhov kub thiab txias ntawm kev ruaj ntseg ntawm cov tebchaw. Qhov kev tshuaj ntsuam no feem ntau yog siv los ntsuas qhov yooj yim ntawm kev txo cov hlau oxides thiab sulfides. Cov duab kos duab no yog thawj zaug tsim los ntawm Harold Ellingham xyoo 1944.
Daim duab Ellingham yog dab tsi yog nws cov kev txwv?
Txoj kev txwv ntawm Ellingham daim duab:→ Ellingham daim duab tsuas yog ua raws li cov ntsiab lus thermodynamic xwb Nws tsis piav qhia txog kinetics ntawm cov txheej txheem txo. Daim duab tsuas qhia seb qhov kev tshwm sim puas ua tau lossis tsis tau tab sis tsis yog lub kinetics ntawm cov tshuaj tiv thaiv. → Kev txhais ntawm ∆G° yog nyob ntawm K [∆G°=–RTl.
Daim duab Ellingham sau ob yam ntawm nws yog dab tsi?
Cov yam ntxwv ntawm Ellingham daim duab: (a) Daim duab rau kev tsim cov hlau oxide yog ib txoj kab ncaj nraim nrog txoj kab nqes nqes. (b) Muaj qhov hloov pauv tam sim ntawd ntawm qhov nqes hav rau qee cov hlau oxides, xws li MgO, ZnO thiab HgO.
Koj tau saib dab tsi los ntawm daim duab Ellingham?
Kev soj ntsuam los ntawm daim duab Ellingham.
Rau feem ntau ntawm cov hlau oxide tsim, txoj kab nqes yog qhov zoo. … Daim duab rau kev tsim cov pa roj carbon monoxide yog ib qho txoj kab ncaj nraim nrog txoj kab nqes tsis zoo. Nyob rau hauv rooj plaub no ΔS zoo li 2 moles ntawm CO roj yog tsim los ntawm kev noj ib mole ntawm oxygen gas.
Kev txo qis yog dab tsi?
Autoreduction (los ntawm Fabkis lo lus autoréduction) yog kev tawm tsam kev ua lag luam thiab kev sib koom ua ke los ntawm ib pawg neeg kom txo nqi qis rau cov khoom lossis kev pabcuam kom txog thaum dawb.
