Abstract
Isothermal vapor-liquid equilibrium measurement system with the computer was developed in the region of less than atmospheric pressure. Vapor-liquid equilibria were measured using a still with the aid of computer for control of temperature and measurement of total pressure. A modified Rogalski-Malanowski still with a provision for both vapor and liquid re-circulation was used for the determination of vapor-liquid equilibrium values. The performance of the apparatus was shown by the results of thermodynamic consistency tests for the experimental isothermal vapor-liquid equilibria.
