Video: Vim li cas zinc anode thiab tooj liab yog cathode?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Nyob rau hauv kaw Circuit Court, ib tug tam sim no ntws ntawm ob lub electrodes. Zinc coj li tus anode (supplying electrons) ntawm galvanic cell thiab cov tooj liab raws li cov cathode (siv electrons).
Hais txog qhov no, vim li cas zinc tsis zoo thiab tooj liab zoo?
Cov tooj liab electrode yog zoo electrode, thiab zinc electrode yog tsis zoo electrode. Raws li cov tshuaj tiv thaiv cell pib, atoms ntawm lub zinc electrode poob electrons thiab txav mus rau hauv cov tshuaj raws li zinc ions. Nyob rau tib lub sijhawm, Cu2 + ions tau txais electrons ntawm lub tooj liab electrode thiab daim ntawv tooj liab hlau.
Tsis tas li ntawd, vim li cas tooj liab yog cathode? Electrons nkag rau hauv tooj liab electrode qhov twg lawv ua ke nrog cov tooj liab (II) ions nyob rau hauv cov tshuaj, txo lawv mus rau tooj liab hlau. Lub electrode uas txo qhov tshwm sim yog hu ua cathode . Cov cathode maj nce nyob rau hauv loj vim yog zus tau tej cov tooj liab hlau. Cov cathode yog qhov zoo electrode.
Hais txog qhov no, zinc puas yog anode lossis cathode?
Txheeb xyuas cov oxidation thiab txo cov tshuaj tiv thaiv Los ntawm cov lus pom zoo hauv cov qauv ntawm tes, lub anode yog sau rau sab laug thiab cov cathode yog sau nyob rau sab xis. Yog li ntawd, nyob rau hauv lub cell: Zinc yog cov anode (khoom zinc yog oxidized). Silver yog tus cathode (nyiaj ions raug txo).
Puas yog tooj liab ib txwm yog cathode?
Cu yog deposited raws li ib tug hlau khoom nyob rau hauv lub electrode nto, txawm nws yog ua los ntawm. Tooj hlau yog, raws li nws ib txwm yog, conductive. Raws li cov kauj ruam 2 thiab 3, tam sim no muaj a tooj liab hlau cathode es ua a cathode ua los ntawm lwm yam khoom.
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