SOLUBILITY OF PROPYLENE IN AQUEOUS SILVER-NITRATE

The solubility of propylene in aqueous silver nitrate was measured by the pressure-drop method at temperatures from 278 to 308 K, at total g as pressures up to 0.64 MPa, and at silver nitrate concentrations from 1.0 to 6.0 M. From the temperature dependence of the solubility, valu es were determined for enthalpy and entropy changes. Solubility increa sed significantly with small decreases in temperature. The solubility of propylene increases with increases in pressure and silver nitrate c oncentration. The enthalpy and entropy of solution were found to incre ase with silver nitrate concentrations from 1.0 to 6.0 M; at 1.0 M AgN O3 the enthalpy was -23.5 kJ.mol(-1) and the entropy was -68.2 J.mol(- 1).K-l; at 6.0 M AgNO3 the enthalpy was -25.8 kJ.mol(-1) and the entro py was -71.2 J.mol(-1).K-1. The propylene solubility in aqueous silver nitrate was empirically correlated as a function of system pressure ( P), temperature (T), and silver nitrate concentration (c), and the cor relation fits the results with an average error of +/-8%.