2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Yog ΔG=0, the system is at equilibrium. Yog hais tias ΔG>0, cov txheej txheem tsis tshwm sim raws li sau tseg tab sis tshwm sim spontaneously nyob rau hauv lub rov qab kev taw qhia.
Yuav ua li cas thaum Delta G yog xoom?
Thaum Δ G=0 \Delta \text G=0 ΔG=0delta, pib ntawv, G, ntawv kawg, sib npaug, 0, lub kaw lus nyob rau hauv qhov sib npaug thiab qhov ntau ntawm cov khoom thiab reactants yuav nyob tas mus li.
Vim li cas Gibbs dawb zog yog xoom?
Yog li, yog tias lub zog pub dawb yog qhov zoo hauv cov tshuaj tiv thaiv, ces qhov rov qab tshwm sim yuav tshwm sim. Tam sim no equilibrium tsuas yog ib qho taw qhia uas tsis muaj kev hloov pauv tshwm sim, uas yog, qhov sib npaug hauv qhov system tsis muaj qhov hloov pauv raws sijhawm. Yog li ntawd tus entropy(S) thiab enthalpy(H) kuj tsis hloov. Yog li, dG=0.
txhais li cas thaum ∆ G yog xoom?
Yog tias nws tshwm sim tias cov khoom thiab cov tshuaj reactants sib npaug ntawm qhov sib npaug, ces ∆G° yog xoom, TAB ∆G° tsis yogtsim nyogZERO ntawm equilibrium. … Yog hais tias yog li ntawd, ces cov tshuaj tiv thaiv yuav tsum tau los ntawm ntau reactants, txo tus nqi ntawm Q, thiab cia ∆G mus txog xoom, piv txwv li, cia equilibrium tsim.
Dab tsi yog Gibbs dawb zog?
Lub Gibbs dawb lub zog (, ntsuas hauv joules hauv SI) yog qhov siab tshaj plaws ntawm kev ua haujlwm tsis nthuav dav uas tuaj yeem muab rho tawm los ntawm lub kaw lus thermodynamically kaw (ib qho uas tuaj yeem pauv tau cua sov thiab ua haujlwm nrog nws ib puag ncig, tab sis tsis muaj teeb meem).
Pom zoo:
Cov menyuam puas tsaug zog thaum pw tsaug zog?
Tus menyuam kawm ntawv li cas ntsig txog kev pw tsaug zog. Ntxiv mus,koj cov menyuam qhov loj me yuav poob qis, tej zaum xav txog kev qaug zog hauv txoj haujlwm ntawm kev tswj qhov loj dua. Cov leeg lawv tus kheej tuaj yeem ua rau lub log thiab lub peev xwm ua kom cov tub ntxhais kawm qhib yuav ploj mus.
Gibbs dawb lub zog puas zoo?
Gibbs dawb lub zog yog qhov tsis zoo rau qhov tshwm sim tshwm sim (tsuas yog). Nws tuaj yeem ua tau zoo thiab, rau cov tshuaj tiv thaiv uas tsis yog tshwm sim. txhais li cas thaum Gibbs tsis muaj zog yog qhov zoo? Lub cim ntawm ΔG yuav hloov ntawm qhov zoo mus rau qhov tsis zoo (lossis lwm qhov) qhov twg T=ΔH / ΔS.
Vim li cas lub zog muaj peev xwm tsis zoo thaum lub zog txaus nyiam?
Qhov no yog tus nqi tsis zoo rau ob qho laj thawj; lub zog ua yeeb yam ntawm lawv yog qhov txaus nyiam, thiab xoom ntawm lub zog muaj peev xwm yog nyob ntawm kev sib cais tsis kawg. Qhov no yog qhov tshwm sim tsis zoo yog tias lub zog ntawm ob tus nqi txaus nyiam(lawv tawm tsam) thiab qhov zoo yog tias nws ntxub (cov nqi zoo sib xws).
Lub sijhawm kuv lub sijhawm dawb lossis thaum kuv lub sijhawm dawb?
yog li, qhov no txhais tau tias "thaum kuv lub sijhawm dawb" tsis siv ntauthiab koj muab "hauv kuv lub sijhawm dawb" ntau dua nyob rau qhov kawg ntawm kab lus. Piv txwv li: Kuv tau taug kev tus dev thaum kuv lub sijhawm dawb.
Thaum twg tus choj dawb dawb tsim?
Tus choj Grosse Ile Parkway, uas tau tsim nyob rau hauv 1932 thiab rov tsim dua xyoo 2007, tau raug txwv hnyav rau 26-tuj tsheb - lub tsheb thauj khoom khib nyiab - nrog ntau tshaj. $ 5 lab ntawm kev kho yuav pib xyoo tom ntej, cov thawj coj tau hais.
