It follows that with knowledge of the limiting activity coefficient of each component in the binary mixture, eq. ( ) reduces to a system of two equations with two unknowns that can be used to parameterize Wilson's equation. This would allow one to calculate composition dependent activity coefficients which could be used, for example, to model vapor/liquid equilibrium. Moreover, this approach may readily be generalized to multi-component systems. Wilson's equation has two binary parameters for each pair in a multi-components system, where limiting activity coefficients may be used to parameterize each binary pair .