1. The problem statement, all variables and given/known data Calculate the work done during the isothermal reversible expansion of a gas that satisfies the virial equation of state. 2. Relevant equations Virial equation of state: pVm = RT(1+B/Vm + C/Vm + ...) Isothermal reversible expansion: w = -nRT ln(Vf/Vi) 3. The attempt at a solution I tried to substitute n with the expansion, but that is not correct. Any ideas? Thanks!