Xaiv ∆G, rho tawm lub zog poob rau entropy (∆S) los ntawm tag nrho lub zog hloov ntawm lub cev; tag nrho lub zog hloov pauv hauv lub cev no hu ua enthalpy (∆H): ΔG=ΔH−TΔS. Endergonic cov tshuaj tiv thaiv yuav tsum muaj lub zog nkag; tus ∆G rau qhov kev tawm tsam ntawd yuav yog tus nqi zoo.
Koj ua li cas txiav txim siab tias qhov kev tawm tsam yog endergonic lossis exergonic?
Cov kev tawm dag zog kuj tseem hu ua cov tshuaj tiv thaiv tus kheej, vim tias lawv tuaj yeem tshwm sim yam tsis muaj lub zog ntxiv. Reactions nrog qhov zoo ∆G (∆G > 0), ntawm qhov tod tes, xav tau lub zog nkag thiab hu ua endergonic cov tshuaj tiv thaiv.
Ib qho piv txwv ntawm cov tshuaj tiv thaiv endergonic yog dab tsi?
Ib qho piv txwv feem ntau ntawm cov tshuaj tiv thaiv endergonic yog txheej txheem ntawm photosynthesis. Photosynthesis yog siv los ntawm tag nrho cov nroj tsuag los hloov lub teeb lub zog rau hauv ib daim ntawv ntawm chemical zog uas yuav siv tau los roj lawv lub neej dab. Photosynthesis tsis tshwm sim tshwm sim.
Dab tsi yog endergonic exergonic cov tshuaj tiv thaiv?
Hint: Cov tshuaj tiv thaiv exergonic yog cov tshuaj tiv thaiv uas lawv tso tawm ntawm lub zog dawb thiab cov tshuaj tiv thaiv endergonic yog cov tshuaj tiv thaiv uas lub zog nqus tau. … Endergonic cov tshuaj tiv thaiv yog hom tshuaj tiv thaiv uas lub zog dawb yog nqus.
txheej txheem endergonic yog dab tsi?
Definition. Cov tshuaj tiv thaiv endergonic yog ib qho uas yuav tsum muaj lub zog pub dawb los mus. Ib qho piv txwv ntawm endergonic cov tshuaj tiv thaiv kab mob lomkev txaus siab yog photosynthesis. Cov kab mob Photosynthetic ua cov tshuaj tiv thaiv no los ntawm kev siv lub hnub ci photons los tsav qhov txo cov pa roj carbon dioxide rau qabzib thiab oxidation ntawm dej rau oxygen.
