Physical Chemistry Real gases Estimate a molar volume e Estimate the molar volume of CO 2 at 500 K and 100 atm by treating it as a van der Waals gas.(the van der waals e coefficients of co are: a=3.592 atmL2mo1-2 6=4267x10-2L mo Answer. Rearrange equation( 8.2) for a molar volume RT a V-b (8.2) RT ab 73-b+ 0 P RT(8.206×10- Latmk- mo)×(500K) 0.410LmO P 100atmEstimate a molar volume Estimate the molar volume of CO2 at 500 K and 100 atm by treating it as a van der Waals gas. (the van der Waals coefficients of CO2 are: a=3.592 atmL2mol-2 , b=4.26710-2 L mol-1 ) Answer. 1 2 1 1 0.410 100 (8.206 10 ) (500 ) − − − − =   = Lmol atm LatmK mol K P RT 2 (8.2) m Vm a V b RT P − − = Rearrange equation (8.2) for a molar volume 0 3 2  − =       +      − + P ab V P a V P RT Vm b m m Physical Chemistry Real Gases