Vapor-liquid equilibria and excess enthalpy data for the binary systems benzene plus benzonitrile and toluene plus benzonitrile covering the temperature range from 323.15 to 413.15 K

Isothermal P-x data (VLE) and excess enthalpy (H-E) data for the two binary systems benzene + benzonitrile and toluene + benzonitrile have been measur ed by means of a computer-operated static apparatus and an isothermal flow calorimeter. Activity coefficients at infinite dilution gamma(i)(infinity) have been derived by fitting a flexible Legendre polynomial to the experime ntal VLE data. Temperature-dependent interaction parameters for different e xcess Gibbs energy (G(E)) models have been fitted simultaneously to the exp erimental VLE and H-E data. The experimental results have been compared wit h the data of other authors.