=pp°+euE°+ap RTLn- P +ne RTLn p P oRTn o+n RTLao np RTLnyp+nE RTLnyE Pp-PyB =D业D°(T,P)+nEE°(T,P) +RT(npLnyp+neLnyE) (n°-5)μD(I,P)+5μE°(T,P)+AG% △Gir=RT(mpLnyp+nLnyE) 7 = nD μD °+ nE μE °+ nD RTLn P PD + nE RTLn P PE = nD μD °+ nE μE °+ nD RTLn P P + nE RTLn P P + nD RTLnyD + nE RTLnyE = nD μD °(T,P)+ nE μE °(T,P) + RT(nD LnyD + nE LnyE ) =( nD °- )μD θ(T,P)+ μE θ(T,P)+ Gmix Gmix= RT(nD LnyD + nE LnyE ) PB =PyB