EXCESS-ENTHALPIES AND EXCESS VOLUMES OF BINARY-MIXTURES CONTAINING TOLUENE + CYCLIC ETHERS AT 298.15 K

The excess molar enthalpies H(E) and the excess molar volumes of mixing V(E) of binary liquid systems containing toluene + cyclic ethers (1,4-dioxane, oxane, 1,3-dioxolane, or oxolane) were determined at atmospheric pressure and 298.15 K by using an isothermal flow microcalorimeter and a digital densimeter. The experimental data were correlated by means of a polynomial function, and the influence of ring size and proximity of oxygen atoms in diethers on H(E) and V(E) has been discussed.