Cov txheej txheem:
Video: Yuav ua li cas ua ib tug galvanic cell nrog zinc thiab tooj liab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tooj-Zinc Galvanic Cell
- Ncuav ib qho ntawm cov kev daws rau hauv lub beaker thiab lwm qhov kev daws rau hauv lwm lub beaker.
- Clamp lub tooj liab strip rau hauv lub beaker uas muaj CuSO4 daws thiab ua qhov sib npaug nrog cov zinc strip.
- Txuas ob lub beakers nrog tus choj ntsev.
- Txuas ib qho txhuas los ntawm voltmeter mus rau txhua qhov ntawm cov hlau strips.
Ua li no, Zinc thiab tooj liab tsim hluav taws xob li cas?
Ib qho yooj yim electrochemical cell yuav ua tau los ntawm tooj liab thiab zinc hlau nrog kev daws ntawm lawv cov sulfates. Nyob rau hauv tus txheej txheem ntawm cov tshuaj tiv thaiv, electrons yuav kis tau los ntawm lub zinc mus rau tooj liab los ntawm txoj kev siv hluav taws xob uas muaj txiaj ntsig zoo hluav taws xob tam sim no.
Ib tug kuj yuav nug, vim li cas zinc lub anode thiab tooj liab cathode? 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).
Hauv qhov no, dab tsi ua rau cathode zoo nrog zinc?
Cov khoom zinc yog oxidized rau daim ntawv zinc ions. Cov electrons no tseem tshuav rau ntawm zinc electrode ( anode ) ua rau nws tsis zoo. Cov nyiaj ions coj electrons thiab raug txo kom tsim cov nyiaj. Qhov no ua nyiaj electrode ( cathode ) zoo.
Puas yog zinc zoo lossis tsis zoo?
Tus naj npawb atomic ntawm zinc yog 30 lub ntsiab lus tias nws cov nucleus muaj 30 protons. Zinc feem ntau cov ntawv zoo them cations nrog tus nqi ntawm +2. Zinc yuav tsis tshua tsim ions nrog tus nqi +1 tab sis nws yuav tsis tsim ions nrog a tsis zoo nqi.
Pom zoo:
Vim li cas zinc anode thiab tooj liab yog cathode?
Nyob rau hauv kaw Circuit Court, ib tug tam sim no ntws ntawm ob lub electrodes. Zinc coj li anode (siv electrons) ntawm galvanic cell thiab tooj liab li cathode (siv electrons)
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