Question

Problem 3: PV Work for a van der Waals Gas (1 points) The work for a reversible, isothermal expansion of an ideal gas was found by starting with the expression for reversible work --CP V2 P dV V1

Answer 1

Problem 3 : When ideal gas is used, the equation is PV = nRT or, Pa MRT so, wagi = 8h pdv = nRT Sh dr V since the process is isothermas, so, Wri = nRT ln ( 72 ) Again , at T is constant so , z = P1 This woi = nRT in V = nRT in P .... ideal gas, reversible process, For van der Waals gas, (P + cambit(V-nb) = nRT 1:03 = nRT in , b) + an (- 5) .... van der Waals iso thermal gas, reversible process.