Navigation Tree (Mixtures): VLE Data Sets and Consistency Tests: Infinite Dilution Test

VLE Thermodynamic Consistency: Infinite Dilution Test background

Test 4: Infinite Dilution Test. This is a test for consistency in the limiting behavior of G^E/(x₁x₂/RT) and the activity coefficients g₁ and g₂. The percent deviations in both limits are calculated:

The criteria proposed by Kojma and coworkers^19,22 are used in TDE. If I₁ < 30 and I₂ < 30, the data set passes the test; otherwise it fails. For the regression of G^E/(x₁x₂/RT), and the activity coefficients g₁ and g₂, the Pade approximation is used (the mathematical form is shown with the description of the Point Test description.The quality factor for the Infinite Dilution Test is calculated with I₁ and I₂:

, with the limits: .