Application of the Prigogine-Flory-Patterson model to excess molar enthalpy of binary liquid mixtures of 1-nonanol or 1-decanol with acetonitrile at atmospheric pressure and 298.15, 303.15 and 308.15Â K

Excess molar enthalpy data of 1-nonanol + acetonitrile and 1-decanol + acetonitrile mixtures as a function of composition at atmospheric pressure at 298.15, 303.15 and 308.15 K have been used to test the applicability of the Prigogine-Flory-Patterson (PFP) model. Both systems exhibit positive excess molar enthalpy values over the whole composition range for the studied temperature range. The model has only one adjustable parameter and correlates the data within a standard deviation up to 309 J mol− 1. The interactional contribution of the model is the most important one to describe the experimental values.