Dab tsi yog tus nqi ntawm cathode nyob rau hauv electrochemical cell?
Dab tsi yog tus nqi ntawm cathode nyob rau hauv electrochemical cell?

Video: Dab tsi yog tus nqi ntawm cathode nyob rau hauv electrochemical cell?

Video: Dab tsi yog tus nqi ntawm cathode nyob rau hauv electrochemical cell?
Video: Kev hlub tu hnub koj ntsib nws. 10/9/2017 2024, Kaum ib hlis
Anonim

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.

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