| Abstract: | The Clausius equation was modified for the calculation of vapor-liquid equilibria in binary and multicomponent systems. In the modification, the three parameters of the equation were considered temperature dependent. Molal volumes of saturated liquid and vapor together with the condition that the fugacities of the vapor and the liquid phase are equal at the condition of equilibrium were used for evaluating the parameters of pure components. Applications were made successfully to systems nitrogen-methane, nitrogen-oxygen, argon-oxygen, nitrogen-argon, argon-methane, carbon dioxide-hydrogen sulfide, carbon-dioxide-propane, hydrogen sulfide-n-butane and nitrogen-argon-oxygen. |
