The final form of this equation sets the natural log of the pressure equal to minus the change in enthalpy divided by RT plus a constant.
The integration of this equation typically assumes the temperature-independence of a quantity whose temperature dependence can be given by the Watson correlation. One empirical alternative to this equation is the Riedel equation. It's not the Gibbs-Duhem, but this equation can be derived by taking the definition of the differential of Gibbs free energy and noting that the Gibbs free energy does not change. That derivation eventually sets the change in entropy divided by the change in (*) volume equal to the derivative of pressure with respect to temperature. The final form of this equation sets the natural log of the pressure equal to minus the change in enthalpy divided by RT plus a constant. For 10 points, name this equation which gives the slope of a coexistence curve on a phase diagram.
The integration of this equation typically assumes the temperature-independence of a quantity whose temperature dependence can be given by the Watson correlation.
Clausius-Clapeyron equation