Volumetric Behavior of Water–Alcohol Mixture at 673.15 K under high pressures. I. Methanol and Ethanol Solutions
نویسندگان
چکیده
The densities of water-methanol and water-ethanol mixtures were measured with the laser-doppler type vibrating tube densimeter at 673.15 K in the pressure range of 25–40 MPa. The excess molar volumes Vm E for all mixtures studied were evaluated from the experimental values, and the dependences of alcohol composition for Vm E were fitted with Redlich-Kister equation. For all mixtures studied, Vm E are positive deviations from the ideal mixtures in the whole composition range at 673.15 K. The composition dependences of Vm E show maxima around 30–40 mol% of alcohol in water and the pressure dependences of Vm E around 30 MPa at 673.15 K.
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