Recent content by ragingbuddha

This equation is given by the problem. Frankly, I don't know where that equation comes from either because I cannot derive it from anything I have learned so far.

Homework Statement Derive change in entropy for Van der Waal gas in isothermal expansion TdS = ∫(dP/dV)dV + ∫(Cv/T)dT Homework EquationsP = NRT/(V-bN) + a(N/V)^2 The Attempt at a Solution TdS = ∫dP + 0 = Pf - Pi TΔS = ∫dP = ∫(Pf - Pi) TΔS = [ ∫ (NRT / Vf-bN) - a(N/Vf)^2] - [ ∫ (NRT /...