THERMODYNAMIC PROPERTIES OF THE TERNARY MIXTURE ACETONE PLUS METHANOLPLUS ETHANOL AT 298.15 K

Speeds of sound, densities, and refractive indices of the ternary mixt ure acetone + methanol + ethanol have been measured at 298.15 K and at mospheric pressure. The excess molar volumes, changes of refractive in dices, and isentropic compressibilities were determined from the exper imental data. Several methods for predicting multicomponent derived pr operties from binary data were tested. The Peng-Robinson and Soave-Red lich-Kwong equations of state were also applied, with three different mixing rules, to calculate binary interaction parameters and predict t ernary excess volumes, satisfactory results being obtained for this mi xture.