Recent content by ChristineMarie

Homework Statement Derive an equation for the change in free energy, ΔGmixing, when ideal gases with the same temperature and pressure, are mixed. Homework Equations ΔGmixing = nRT∑(xi)ln(xi) (∂/∂T(G/T))p = -H/(TxT) The Attempt at a Solution Pi = xiPi* μi = Gi,m μ = (∂G/∂n) at constant T...

Thank you!

I'm just not sure how to incorporate the pressures, if I even need to. But if I don't need to use the pressures I would like to understand why.

ΔS = nRln(Vf/Vi) + nCv,mln(Tf/Ti). Only the mole unit, n = 1mol? R is a constant = 8.3145J/mol.K = 0.083145L.bar/mol.K

How do you calculate the entropy of an ideal gas with n = 1, Cv,m = 1.5R, Ti = 300K, P=3bar and expands against Pext = 1bar until final volume is twice initial volume at Tf = 200K?