Equilibrium at 425K and 15 bar is established for the gas-phase isomerization reaction nC4H10(g)iso-C4H10(g) Data: For iso-butane, Hf,298Ko=134,180Jmol1;Gf,298Ko20,760Jmol1 Estimate the composition of the equilibrium mixture by two procedures: (a) Assume an ideal-gas mixture. (Ans. ynC4=0.664 ) (b) Assume an ideal solution with the non-ideal gas behavior described by the generalizec equations. (Ans. ynC4=0.661 ) Compare and discuss the results