Cov txheej txheem twg yog lub cev hloov pauv hlau rusting?
Cov txheej txheem twg yog lub cev hloov pauv hlau rusting?

Video: Cov txheej txheem twg yog lub cev hloov pauv hlau rusting?

Video: Cov txheej txheem twg yog lub cev hloov pauv hlau rusting?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Thaum cov khoom ua los ntawm hlau raug rau oxygen thiab noo noo (dej), xeb siv qhov chaw. Kev xeb tshem tawm ib txheej ntawm cov khoom los ntawm qhov chaw thiab ua rau cov khoom tsis muaj zog. Kev xeb yog a tshuaj hloov.

Tsis tas li lo lus nug yog, hom tshuaj tiv thaiv dab tsi yog qhov xeb ntawm hlau?

Rusting yog cov tshuaj tiv thaiv oxidation. Cov hlau reacts nrog dej thiab oxygen los tsim hydrated hlau (III) oxide, uas peb pom li xeb. Hlau thiab hlau xeb thaum lawv los rau hauv kev sib cuag nrog dej thiab oxygen - ob qho tib si xav tau rau kev xeb kom tshwm sim.

hom kev hloov dab tsi yog xeb? xeb yog kom meej meej ib yam khoom uas txawv ntawm hlau. Kev xeb yog ib qho piv txwv ntawm cov tshuaj hloov . Cov cuab yeej tshuaj lom neeg piav qhia txog lub peev xwm ntawm ib yam khoom los mus rau ib qho tshuaj tshwj xeeb hloov . Cov cuab yeej tshuaj ntawm cov hlau yog tias nws muaj peev xwm ua ke nrog oxygen rau daim ntawv hlau oxide, lub npe tshuaj ntawm xeb.

yog vim li cas rusting ntawm tus ncej hlau tsis yog lub cev hloov?

Kev piav qhia: Kev hloov tshuaj koom nrog kev tsim cov tshuaj tshiab, thiab ua kom muaj zog thiab tawg tshuaj daim ntawv cog lus. Ob txheej txheem manifestly tshwm sim thaum hlau hlau oxidizes muab FeO thiab Fe2O3.

Leej twg nrhiav tau xeb?

Rust hauv Keeb Kwm. Tus zoo Roman philosopher, Pliny , AD 23-79, tau sau ntev txog ferrum corrumpitur, lossis cov hlau tsis zoo, rau thaum nws lub sijhawm Roman faj tim teb chaws tau raug tsim los ua lub ntiaj teb kev vam meej tshaj plaws, qhov txawv ntawm ib feem ntawm kev siv hlau rau riam phom thiab lwm yam khoom qub.

Pom zoo: