Video: Dab tsi yog txheej txheem spontaneous thiab non-spontaneous txheej txheem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A txheej txheem spontaneous yog ib qho tshwm sim tsis muaj kev cuam tshuam ntawm sab nraud. A txheej txheem tsis spontaneous yuav tsis tshwm sim yog tsis muaj kev cuam tshuam ntawm sab nraud.
Tsis tas li ntawd, dab tsi yog qhov tshwm sim ntawm tus kheej thiab tsis yog tus txheej txheem?
A txheej txheem spontaneous muaj peev xwm mus rau hauv ib qho kev taw qhia yam tsis tas yuav tsum tau tsav los ntawm lub zog sab nraud. Ib qho endergonic tshuaj tiv thaiv (tseem hu ua a cov tshuaj tiv thaiv tsis raws cai ) yog chemical tshuaj tiv thaiv nyob rau hauv uas tus qauv hloov nyob rau hauv dawb zog yog zoo thiab lub zog yog absorbed.
Kuj Paub, dab tsi yog cov txheej txheem tsis ua raws li tus qauv muab piv txwv? Ib qho tshuaj tiv thaiv tsis raws cai xav tau lub zog sab nraud los tso cov tshuaj tiv thaiv no. Piv txwv li, tsis muaj lub zog sab nraud, dej yuav nyob dej mus ib txhis. Nyob rau hauv cov xwm txheej zoo, ntxiv hluav taws xob (tam sim no ncaj qha) yuav ua rau cov pa roj hydrogen thiab cov pa oxygen.
Kuj Paub, nws txhais li cas yog hais tias tus txheej txheem yog spontaneous?
A txheej txheem spontaneous yog lub sij hawm-evolution ntawm ib tug system nyob rau hauv uas nws tso tawm lub zog dawb thiab nws txav mus rau ib tug qis dua, ntau thermodynamically ruaj khov lub zog. Rau cov xwm txheej uas muaj kev sib cais uas tsis muaj lub zog hloov pauv nrog ib puag ncig, cov txheej txheem spontaneous yog characterized los ntawm kev nce hauv entropy.
Puas yog tag nrho cov txheej txheem ntuj tsim tau?
Txoj Cai Thib Ob: Hauv ib qho kev sib cais, cov txheej txheem ntuj yog tus kheej thaum lawv ua rau muaj kev tsis sib haum xeeb, lossis entropy. Cov lus no tau txwv rau cov kab ke sib cais kom tsis txhob muaj kev txhawj xeeb txog seb cov tshuaj tiv thaiv puas yog exothermic lossis endothermic.
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