Video: Yuav ua li cas thaum koj kub tooj liab hmoov?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum lub " tooj liab hmoov ”yog cua sov nyob rau hauv ib lub 'China phaj', lub tooj liab hmoov surfacebecomes coated nrog "dub xim tshuaj" vim lub formation ntawm ' tooj liab oxide 'los ntawm nto oxidation. EXPLANATION: Tooj reacts nrog oxygen nyob rau hauv cov huab cua cua sov thiab cov ntawv tooj liab oxide.
Ua li no, tooj liab tuaj yeem ua kom sov?
Tooj yog ib tug zoo conductor ntawm kub . Qhov no txhais tau tias yog koj kub ib kawg ntawm ib daim tooj liab , lwm kawg yuav nrawm mus txog qhov kub thiab txias. Feem ntau cov hlau yog zoo nkauj zoo conductors; Txawm li cas los xij, tsis yog nyiaj, tooj liab yog qhov zoo tshaj plaws.
Qhov thib ob, tooj liab puas cuam tshuam nrog oxygen? tooj liab ua tsis yog teb nrog dej, tab sis nws ua maj mam teb nrog atmospheric oxygen toform ib txheej ntawm xim av-dub tooj liab oxide uas, tsis zoo li therust uas tsim ntawm hlau hauv cov huab cua ntub, tiv thaiv cov hlau hauv qab los ntawm kev xeb ntxiv (passivation).
Ntxiv mus, yog tooj liab hlawv cov tshuaj hloov pauv?
Xim hloov qhia tias qhov tshiab tshuaj tshuaj tau tsim. Tooj on thesurface of the penny tau ua ke nrog oxygen hauv huab cua los tsim cov khoom sib txawv hu ua tooj liab oxide. Hlawv yog tshuaj hloov.
Vim li cas tooj liab nce loj thaum rhuab?
Lawv ua qhov no vim lawv yog cov tebchaw uas decompose thiab tso cov tshuaj rau saum huab cua. Qee cov tshuaj (xws limagnesium lossis tooj liab ) yuav nce hauv pawg . Lawv ua Qhov no vim tias lawv yog cov ntsiab lus thiab lawv ua ke nrog oxygen. Kom paub seb puas muaj kev hloov hauv pawg cov tshuaj yuav tsum tau hnyav ua ntej thiab tom qab cua sov.
Pom zoo:
Yuav ua li cas thaum koj sib tov tooj liab thiab sulfur?
Thaum rhuab ua ke, tooj liab thiab sulfur sib xyaw ua ib qho sulfide ntawm tooj liab. Qhov ntau sulfurvaporizes tsim gaseous sulfur, uas khiav tawm ntawm lub crucible. Thaum cov roj sulfur kub ncav cuag huab cua, nws reacts nrog oxygen los tsim gaseous oxides ntawm leej faj (tsuas yog sulfur dioxide, SO2)
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