Kub yog ib qho khoom muaj nqis heev. Ntau tus neeg yuav nws rau lub hom phiaj ntawm kev khaws cia thiab txaus siab rau nws tus nqi. Tab sis dab tsi yog qhov cuam tshuam yog tias qee cov neeg pom lawv cov pob kub lossis cov npib kub ua kev nco txog rusted.
Cov kub ntshiab yuav tsis xeb
Cov hlau feem ntau cuam tshuam nrog oxygen los tsim cov hlau oxides, uas peb hu ua xeb. Tab sis raws li ib tug precious hlau, kub tsis xeb. Vim li cas? Qhov no yog ib lo lus nug nthuav. Peb yuav tsum tau daws qhov paub tsis meej los ntawm cov khoom tseem ceeb ntawm kub.
Hauv chemistry, oxidation cov tshuaj tiv thaiv yog cov txheej txheem tshuaj uas cov khoom poob electrons thiab dhau los ua cov ions zoo. Vim tias muaj cov ntsiab lus siab ntawm cov pa oxygen hauv qhov xwm txheej, nws yooj yim kom tau txais cov khoom siv hluav taws xob los ntawm lwm cov khoom los tsim oxides. Yog li ntawd, peb hu cov txheej txheem oxidation tshuaj tiv thaiv. Lub peev xwm ntawm oxygen kom tau txais cov hluav taws xob yog qhov tseeb, tab sis qhov ua tau ntawm txhua lub caij poob electrons txawv, uas nyob ntawm lub zog ionization ntawm cov hluav taws xob sab nraud ntawm lub caij.
Atomic qauv ntawm kub
Kub muaj zog oxidation tsis kam. Raws li kev hloov pauv hlau, nws thawj lub zog ionization yog siab li 890.1kj / mol, thib ob tsuas yog mercury (1007.1kj / mol) ntawm nws sab xis. Qhov no txhais tau hais tias nws yog qhov nyuaj heev rau oxygen los ntes ib qho hluav taws xob los ntawm kub. Kub tsis tsuas yog muaj zog ionization ntau dua li lwm cov hlau, tab sis kuj muaj siab atomization enthalpy vim tsis muaj cov hluav taws xob tsis sib xws hauv nws qhov 6S orbit. Lub atomization enthalpy ntawm kub yog 368kj / mol (mercury tsuas yog 64kj / mol), uas txhais tau hais tias kub muaj zog hlau binding quab yuam, thiab kub atoms muaj zog attracted rau ib leeg, thaum mercury atoms tsis muaj zog attracted rau ib leeg, yog li ntawd. Nws yog qhov yooj yim dua rau kev xyaum los ntawm lwm cov atoms.
Post lub sij hawm: Sep-01-2022
