VLE calculations can be a complicated and time-consuming process. In fact, attempting to do them by hand is not only laborious but can also lead to errors. This is why leveraging the computational power and speed of computers can be a game-changer. PEC is a program that handles VLE calculations and uses mathematical models to predict various thermodynamic properties and parameters with minimal data required. By doing so, it greatly reduces the time and effort required to complete iterations manually.
However, it's important to note that the results from PEC are only as good as the data entered. Furthermore, it's vital to understand that the results generated are not validated via any experimental data or external database. As a result, it's essential to confirm that your chosen system is correctly defined for the given conditions.