Video: Yuav ua li cas koj xam Overpotential?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj peev xwm heev yog feem ntau xam raws li kev siv peev xwm rho tawm tus qauv peev xwm. Hauv daim ntawv no, lawv siv 0V raws li tus qauv peev xwm ntawm SHE, qhov txo qis ntawm H + rau H2 yog qhov tshwm sim tshwm sim.
Tom qab ntawd, Dab tsi yog Overpotential hauv electrochemistry?
Hauv electrochemistry , overpotential yog qhov muaj peev xwm sib txawv (voltage) ntawm ib nrab-reactions lub thermodynamically txiav txim siab txo qhov muaj peev xwm thiab lub peev xwm ntawm qhov kev tshwm sim redox tau sim ua. Lub sij hawm yog ncaj qha cuam tshuam rau lub xov tooj ntawm tes qhov voltage efficiency.
Dab tsi yog qhov ua kom muaj zog tshaj? Activation overpotential yog lub zog poob vim qhov qeeb ntawm cov tshuaj tiv thaiv electrochemical ntawm lub anode thiab cathode electrodes. Activation overpotential yog ib qho kev ntsuas ntawm kev ua ntawm electrodes.
Ib yam li ntawd, tib neeg nug, Dab tsi yog Overpotential hauv roj teeb?
Hauv roj teeb , overpotential yog qhov muaj peev xwm sib txawv (los yog ntsuas voltage) ntawm qhov theoretical lossis thermodynamically txiav txim siab voltage thiab qhov tseeb voltage nyob rau hauv kev ua haujlwm. Nyob rau hauv ib tug galvanic cell overpotential txhais tau hais tias tsawg zog tau zoo dua li qhov kev txiav txim siab thermodynamically.
Tafel yog dab tsi?
A Tafel zaj duab xis yog ib daim duab nraaj (feem ntau yog logarithmic) qhia txog kev sib raug zoo ntawm cov tam sim no generated nyob rau hauv ib tug electrochemical cell thiab cov electrode tej zaum ntawm ib tug tshwj xeeb hlau.
Pom zoo:
Yuav ua li cas koj xam tus qauv sib txawv ntawm PMP?
Cov mis siv nyob rau hauv PMBOK rau tus qauv sib txawv yog yooj yim. Nws tsuas yog (P-O) / 6. Qhov ntawd yog qhov pessimistic kev ua ub no kwv yees rho tawm qhov kev kwv yees qhov kev xav tau muab faib los ntawm rau. Qhov teeb meem yog qhov no nyob rau hauv tsis muaj txoj kev zoo los yog daim ntawv tsim ib qho kev ntsuas ntawm tus qauv deviation
Yuav ua li cas koj xam qhov ncig ntawm lub ntiaj teb ntawm nws latitude?
Circumference ntawm lub voj voog yog sib npaug rau 2 π r qhov twg r yog nws lub vojvoog. Nyob rau hauv lub ntiaj teb no, lub circumference ntawm tus kheej ntawm ib tug muab latitude yog 2πr(cos θ) qhov twg θ yog lub latitude thiab r yog lub vojvoog ntawm lub ntiaj teb ntawm kab zauv
Yuav ua li cas koj xam qhov zaus ntawm zaus thiab feem pua?
Ua li no, faib cov zaus los ntawm tag nrho cov txiaj ntsig thiab muab faib los ntawm 100. Hauv qhov no, qhov zaus ntawm thawj kab yog 1 thiab tag nrho cov txiaj ntsig yog 10. Qhov feem pua yog tom qab ntawd yog 10.0. Cov kab kawg yog qhov feem pua Cumulative
Yuav ua li cas koj xam lub sij hawm nws yuav siv sij hawm mus ncig teb chaws?
Kwv yees seb koj yuav mus sai npaum li cas ntawm koj qhov kev mus ncig. Tom qab ntawd, faib koj qhov kev ncua deb ntawm koj qhov nrawm. Qhov no yuav muab rau koj anestimation ntawm koj lub sijhawm mus ncig. Piv txwv li, yog tias koj mus ncig yog 240 mais thiab koj yuav tsav 40 mais ib teev, koj lub sijhawm yuav yog 240/40 = 6hours
Yuav ua li cas koj xam lub sij hawm nws yuav siv ib yam khoom los poob?
Ntsuas qhov deb ntawm qhov khoom yuav poob hauv ko taw nrog tus pas ntsuas lossis ntsuas daim kab xev. Faib qhov kev ncua deb los ntawm 16. Piv txwv li, yog tias cov khoom yuav poob 128 ko taw, faib 128 los ntawm 16 kom tau 8. Xam cov square root ntawm cov kauj ruam 2 los nrhiav lub sij hawm nws yuav siv cov khoom poob hauv vib nas this