Excess enthalpy data in some binary systems containing non electrolyte solution and their correlations at 298.15 K

Excess enthalpy data measured at 298.15 K were collected from the literatur e. The data contains 48 binary systems (812 data points). The experimental data were correlated by Redlich-Kister equation. In this work the following thermodynamics models were also tested. Wilson, NRTL models: and their par ameters were calculated. A modified NRTL with a composition-dependent (alph a (12)) parameter was also proposed. The correlation of excess enthalpy dat a in the systems using this model provides good results.