1. The problem statement, all variables and given/known data Express the van der Waals equation of state as a virial expansion in powers of 1/Vm and obtain expressions for B and C in terms of the parameters a and b. (Hint. The expansion you will need is (1–x) -1 = 1+x+x2+... . Series expansions are discussed in Appendix 2 of Atkins.) Measurements on argon gave B=-21.7 cm3.mol-1 and C=1,200 cm6.mol-2 for the virial coefficients at 273 K. What are the values of a and b in the corresponding van der Waals equation of state? 2. Relevant equations Van der waals equation of state : ( p + a / V^2 ) ( V-b ) = RT 3. The attempt at a solution Apparently this question is very common and found throughout the web. But I couldn't find any solution. I don't even know how to begin with expressing ;( please help. thanks.