Video: Dab tsi yog tus nqi ntawm cathode nyob rau hauv electrochemical cell?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tam sim no los ntawm lub zog hluav taws xob thawb cov hluav taws xob mus rau lub electrode ntawm sab xis ntawm daim duab, qhov twg lawv ua rau txo qis ntawm hom - li no electrode yog cathode . Hauv electrolytic hlwb , cov cathode yog qhov tsis zoo raug nqi . Electrons raug thawb mus rau qhov cathode los ntawm lub zog sab nraud.
Tsuas yog li ntawd, dab tsi yog cathode nyob rau hauv ib tug electrochemical cell?
Hauv ob hom electrochemical hlwb , cov anode yog cov electrode uas oxidation ib nrab-react tshwm sim, thiab cov cathode yog lub electrode uas qhov txo qis ib nrab-reactions tshwm sim.
Tsis tas li ntawd, puas yog cathode zoo lossis tsis zoo? Nyob rau hauv ib tug galvanic (voltaic) cell, lub anode yog xam tsis zoo thiab cov cathode raug txiav txim siab zoo . Qhov no zoo li tsim nyog raws li lub anode yog qhov chaw ntawm electrons thiab cathode yog qhov twg cov electrons ntws. Txawm li cas los xij, nyob rau hauv electrolytic cell, lub anode yog coj los ua zoo thaum lub cathode yog tam sim no tsis zoo.
Ntawm no, dab tsi yog tus nqi ntawm cathode?
Cov cathode yog qhov tsis zoo raug nqi electrode. Cov cathode attracts cations los yog zoo nqi . Cov cathode yog lub hauv paus ntawm electrons los yog electron pub. Nws tuaj yeem lees txais qhov zoo nqi.
Vim li cas cathode zoo hauv electrochemical cell?
Cov anode yog lub electrode qhov twg oxidation (poob ntawm electrons) tshwm sim; hauv a galvanic cell , nws yog qhov tsis zoo electrode, zoo li thaum oxidation tshwm sim, electrons tau tso tseg rau ntawm electrode. Qhov no yog vim li cas lub cathode yog a zoo electrode; vim zoo ions raug txo rau hlau atoms nyob ntawd.
Pom zoo:
Yuav ua li cas cov txheej txheem ntawm cell faib nyob rau hauv eukaryotes feem ntau zoo ib yam li cell faib nyob rau hauv prokaryotes?
Tsis zoo li eukaryotes, prokaryotes (uas suav nrog cov kab mob) tau txais ib hom kev faib cell hu ua binary fission. Hauv qee qhov, cov txheej txheem no zoo ib yam li mitosis; Nws yuav tsum tau rov ua dua ntawm cov cell chromosomes, cais ntawm cov theej DNA, thiab kev sib cais ntawm niam txiv cell cytoplasm
Dab tsi yog qhov txawv ntawm ib puag ncig lapse tus nqi thiab adiabatic lapse tus nqi?
A. Ib puag ncig lapse tus nqi yog hais txog qhov kub thiab txias nrog nce qhov siab hauv troposphere; uas yog qhov kub ntawm ib puag ncig ntawm qhov chaw sib txawv. Nws implies tsis muaj huab cua txav. Adiabatic txias tsuas yog cuam tshuam nrog huab cua ascending, uas txias los ntawm kev nthuav dav
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua
Tus qauv qauv yog dab tsi Qhov txawv ntawm tus qauv qauv thiab tus qauv molecular yog dab tsi?
Cov mis mos molecular siv cov cim tshuaj thiab cov ntawv sau npe los qhia cov naj npawb ntawm cov atoms sib txawv hauv cov molecule lossis compound. Ib qho empirical formula muab qhov yooj yim tshaj plaws, tag nrho tus lej piv ntawm atoms hauv ib qho chaw. Cov qauv qauv qhia txog kev sib koom ua ke ntawm cov atoms hauv cov molecule
Nyob rau hauv dab tsi organelle yog pyruvate oxidation nqa tawm nyob rau hauv ib lub cell?
Pyruvate oxidation cov kauj ruam Pyruvate yog tsim los ntawm glycolysis nyob rau hauv lub cytoplasm, tab sis pyruvate oxidation tshwm sim nyob rau hauv lub mitochondrial matrix (hauv eukaryotes). Yog li, ua ntej cov tshuaj tiv thaiv tuaj yeem pib, pyruvate yuav tsum nkag mus rau mitochondrion, hla nws daim nyias nyias thiab tuaj txog ntawm matrix