= total pressure = critical pressure = intermolecular distance = gas constant = absolute temperature = critical temperature = liquid-phase mole fraction = vapor-phase mole fraction = molar volume = potential energy parameter = liquid-phase activity coefficient = vapor-phase fugacity coefficient = molecular diameter = reduced density = density (molecules per unit volume)

Comments from the viewpoint of languages other than English are especially encouraged. These may have special significance regarding the publication in various countries of translations of the nomenclature eventually approved by IUPAC.

A theory of gas solubility in water has been developed using the scaled-particle theory to calculate the reversible work required to introduce a solute molecule into a fluid. It yields very good agreement with experiment for the heats, entropies, and molar heat capacities of solution and for the partial molar volumes of the solutes. The "abnormal" thermodynamic properties of aqueous solutions are discussed in light of the enthalpy and entropy of cavity formation. The theory shows promise as a method for investigating the thermodynamic properties of aqueous solutions of ions and the properties of gas solubility in molten salts and molten metals. The theory has been used to determine the Lennard-Jones (6-12) pair potential parameters for water and for benzene. The values for water are = 2.76 A.

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The interaction of neon, argon, krypton, and xenon with the graphitized carbon black P33 (2700) is examined using the virial coefficient treatment of physical adsorption. Adsorption isotherm data in the low coverage, Henry’s law region are used to carry out this analysis. A modified Buckingham potential is selected to model the gas–solid interaction potential. A best fitting technique is used to make an unambiguous selection of the interaction potential parameters. A cubic power law decay is found to be the proper choice for the attractive portion of the potential, while the appropriate screening parameters for the exponential, repulsive portion of the potential are determined to be 0.0181, 0.0196, 0.0198, and 0.0215 (nm) for Ne, Ar, Kr, and Xe, respectively. The adatom–adsorbent internuclear separations are 0.307, 0.333, 0.336, and 0.366 (nm) and the gas–solid interaction energies are 384, 1113, 1467, and 1928 (°K) for Ne, Ar, Kr, and Xe, respectively. A surface area of 10.8±0.3 m2g−1 is obtained for the graphitized carbon black.