Answer to Question #134473 in Physical Chemistry for Jenny

Question

The molar volume Vm=22.09dm^3 mol^-1 for Ar gas at 0 degrees Celsius and 1 atm. Calculate the second virial coefficient of Ar under those conditions. Propose a method calculate the third virial coefficient of Ar.

Answer 1

in which the temperature-dependent constants for each gas are known as the virial coefficients. The second virial coefficient, B , has units of molar volume (L/mole). This is sometimes replaced with a modified version with different coefficients, PV = nRT[1 + B'P + C'P² + ...] .
Since, the repulsion among gaseous molecules strongly predominates. the van der waals coefficient ′a′ can be neglected.The third viral coefficient C=b² . . . . . . . . . . . . .