10.25 For the system ethylene(1)/propylene(2) as a gas, estimate f1, f2, 1, and 2 at t = 150°C, P = 30 bar, and y₁ = 0.35: (a) Through application of Eqs. (10.63). P In $1 = R7B₁1 1 + y² 812) P In $2 = R7(B22 + y² 812) RT (10.63a) (10.63b)

Estimate the fugacity of isobutylene as a gas: a) At 280 degrees Celcius and 20 bar(use 2nd virial coefficient correlation)   b) At 280 degrees Celcius and 100 bar. (use Lee-kesler correlation/Appendix table)

Soru 9 Gibbs's Theorem: A partial molar enthalpy of a species i in an ideal gas mixture is equal to the corresponding molar enthalpy of the species as a pure deal gas at the mixture temperature bu at equal to its partial pressure in the mixture Which one of the followings express the given statement in algebraic form, correctly. H(T.P) = H (T.P.) II:Ex H (T.P)= H (T.P) III: H ra(nH)] an P,T,nj Oa None of them O d. III 210707090330-4705

b