An effective method for hard sphere diameters of real fluids along the coexistence line vapour–liquid Original Research Article

The variation of the effective hard sphere diameter with the temperature along the equilibrium line vapour–liquid has been analyzed for a great variety of substances including: (a) atomic simple liquids; (b) inorganic and organic molecular liquids and (c) liquid metals, following several procedures, based in the analogy with a hard sphere fluid. Though the comparison among available methods is generally satisfactory, the method based on internal pressure seems to be more effective.