Using two approximations, it assumes the change in Gibbs free energy is zero and its common form is derived from the First Law of Thermodynamics.
Data obtained from this equation can be correlated with the Reidel Equation; another alternative to it is the Wagner Equation which works over a wide range of temperatures. This statement can be derived from the Gibbs-Duhem relation assuming phases are in equilibrium contact and chemical potential is equal. It only applies when a gas is one phase of the transition, and its formulation can be derived given one point on the coexistance line. Using two approximations, it assumes the change in Gibbs free energy is zero and its common form is derived from the First Law of Thermodynamics. Modified by the Antoine Equation, it states that the derivative of pressure with respect to temperature is equivalent to the heat absorbed over the temperature and volume. FTP, identify this equation used to model phase transitions.
Data obtained from this equation can be correlated with the Reidel Equation; another alternative to it is the Wagner Equation which works over a wide range of temperatures.
Clausius-Clapeyron equation