Abstract :
Excess molar enthalpies, HmE, of binary mixtures containing phenetole (ethoxy benzene)+α-pinene, or β-pinene have been determined in the range (288.15–313.15) K, and at atmospheric pressure using a flow microcalorimeter. HmE curves are symmetrical with positive values over the entire concentration range and show higher values for the mixture containing α-pinene (the maximum value for HmE is 1072 J mol−1). Only a slight influence of temperature on excess molar enthalpies has been observed for both systems. Experimental results have been correlated using the Redlich–Kister polynomial and the adjustable parameters have been evaluated by least-squares analysis. Results have also been interpreted by an extended modified cell model of Prigogine.
