The properties of a curved liquid-vapor interphase boundary of gas-saturated solutions

Solutions with strongly different intermolecular interaction parameters of their components are considered. The van der Waals and Gibbs capillarity th eories are applied to analyze the sigma (R) size dependence of surface tens ion at constant temperature and concentration in a van der Waals solution. The concept of isomorphism of surface phenomena in a binary solution and in a one-component fluid is formulated. A correlation between the type of the phase diagram and the behavior of surface tension at constant temperature and external phase composition is established.