I have conducted calculation to find mole percents of CO2 in vapour as a function of temperature at solid-vapour equilibrium (SVE) by using Peng-Robinson EOS which considers fugacity at the cryogenic condition when the temperature of the system is below triple point temperature. At this condition, solid can vapourize directly to vapour phase. Could I find mole percents of CO2 in liquid at this condition?
As I know, K constant is equal to vapour fraction divided to liquid fraction. Moreover, K constant is equal to liquid-phase partial fugacity divided to vapour-phase partial fugacity.
Thank you for kind attention.
I am familiar with the P-R EOS and often use it, so I know the mathematics. What I don't understand is your question. When you say "mole fraction" are you referring to the portion of a pure substance (CO2) that is in the vapor, liquid, or solid state? Are you referring to the mole fraction of CO2 as one of several components in a mixture (not a pure fluid)? Let's say you asked, "What is the mole fraction (or mass fraction) of steam at 100°C having an enthalpy of 1000 kJ/kg?" hf=419, hg=2675, x=(1000-419)/(2675-419)=0.257 Just because T