The apex pressure p_{pc} of Vapour Liquid Equilibrium (VLE) area on PT diagram of Fluid Mixture (see Fig. 1).
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| Fig. 1. Schematic PT diagram with Vapour Liquid Equilibrium and Pseudo-Critical Pressure (Ppc). |
The simplest estimate of Pseudo-Critical Pressure is the mole fraction weighted average:
| (1) | p_{pc} = \sum_i x_i \, p_{c,i} |
where
x_i | mole fraction of the i-th mixture component |
p_{c,i} | critical pressure of the i-th mixture component |
See also
Natural Science / Physics / Thermodynamics / Thermodynamic system / Pseudo-Critical Point (Tpc, ppc)
[ Fluid Mixture ][ Pseudo-Critical Temperature (Tpc) ]