Yog tias ΔH yog qhov tsis zoo thiab ΔS yog qhov zoo, cov tshuaj tiv thaiv yog qhov tshwm sim ntawm txhua qhov kub vim qhov kev hloov pauv ntawm Gibbs lub zog dawb yog ib txwm tsis zoo. Contrastingly, yog tias ΔH yog qhov zoo thiab ΔS yog qhov tsis zoo, cov tshuaj tiv thaiv tsis ua raws li qhov ntsuas kub raws li sau tseg.
Yuav tshuaj tiv thaiv dab tsi tsis tshwm sim ntawm qhov kub thiab txias?
Thaum ΔH tsis zoo thiab ΔS yog qhov zoo, ΔG yuav tsis zoo rau txhua qhov kub. Thaum ΔH tsis zoo thiab ΔS tsis zoo, ΔG yuav tsis zoo ntawm qhov kub thiab txias. Thaum ΔH yog qhov zoo thiab ΔS tsis zoo, ΔG yuav tsis zoo ntawm qhov kub thiab txias. Yuav tsis muaj qhov tshwm sim tshwm sim.
Yuav ua li cas thiaj tsis muaj tshuaj tiv thaiv kab mob?
Ib qho tshuaj tiv thaiv endergonic (tseem hu ua cov tshuaj tiv thaiv tsis raws cai) yog cov tshuaj tiv thaiv tshuaj uas tus qauv hloov pauv hauv lub zog dawb yog qhov zoo thiab lub zog nqus tau. Cov txheej txheem Endergonic tuaj yeem raug thawb lossis rub los ntawm kev sib txuas lawv mus rau qhov ua tau zoo heev.
Yuav ua li cas yog qhov tsim nyog rau qhov kev tshwm sim kom tshwm sim ntawm txhua qhov kub?
Thaum ΔS > 0 thiab ΔH < 0, txheej txheem ib txwm ua raws li sau tseg. Thaum ΔS 0, cov txheej txheem yeej tsis tshwm sim, tab sis cov txheej txheem rov qab yog ib txwm ua tsis tau. Thaum ΔS > 0 thiab ΔH > 0, cov txheej txheem yuav tshwm sim ntawm qhov kub thiab txias tsis ua raws li qhov ntsuas kub tsawg.
Yuav ua li cas piv txwv ntawm kev tshwm sim tshwm sim?
MuajCov tshuaj tiv thaiv ib puag ncig yog exothermic - lawv tso cov cua sov thiab sov so rau lawv ib puag ncig: piv txwv li: hlawv ntoo, foob pob hluav taws, thiab alkali hlau ntxiv rau dej. Thaum lub atom hluav taws xob sib cais, nws tso tawm lub zog: qhov no yog qhov tshwm sim ntawm tus kheej, exothermic nuclear tshuaj tiv thaiv.
