For the Berlin form of the virial equation, this expression becomes [Pg.164]

D3. Fugacity Coefficient of the Virial Equation (Berlin Form) [Pg.645]

The virial equation can not only describe the PvT behavior of gases, but also the different residual functions. Both forms (Leiden form and Berlin form) are well-suited for this purpose, but most of the thermodynamic functions can be derived easier using the Berlin form, because this form is volume explicit. Volume explicit means that the equation can be solved explicitly for vas a function of T and P. As an example, the calculations of the fugacity coefficient and of the residual function of the enthalpy are shown, using the virial equation in the Berlin form truncated after the second virial coefficient B. [Pg.32]

The virial equation can be derived with the help of statistical mechanics or regarded as simple expansions of the compressibility factor z in terms of pressure P (Berlin form) [Pg.28]

The quantities B, C, D,..., termed the second, third, fourth,..., virial coefficients, are for a given gas functions of temperature only. Equation (15) can be described as the virial equation of state in the volume-explicit (or Leiden) form. A related equation of state, that in the pressure-explicit (or Berlin) form, is also in common use [Pg.168]

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