How to construct a P vs. T graph using the Peng-Robinson EOS in thermodynamics? The only condition existed is the temperature range from 150 to 520 K. The prof told me that to look for P at a fixed T and then see if the fugacities match, but how exactly can I do it? The goal is to model the same figure as the attached file. Please show me some hints since I don't know where i should start. Much appreciated.