Abstract
Based on experimental pVTx data, a theoretical study of the thermodynamic properties of a binary n-hexane + water system is performed for ten water concentrations (0.166, 0.201, 0.234, 0.237, 0.347, 0.615, 0.827, 0.918, 0.935, and 0.964 mole fractions of H2O) along different isochors. Constant volume piezometer measurements are made in the temperature, density, and pressure intervals of 303.65–690.55 K, 66.87–801.20 kg/m3, and 65.7 MPa. Based on the pVTx data and using different methods, the Krichevsky parameter is determined near the critical properties of the pure solvent (n-hexane or water).
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