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The osmotic coefficients of the sodium form of some biopolymers
Biopolymers, 1989AbstractThe osmotic coefficients ϕp,Na of dilute solutions of the sodium form of some weakly acidic polymers are theoretically predicted in this work. Based on the measured value 0.73 of γNa, the activity coefficient of free Na+, of the completely ionized humic acid (sodium salt) in a salt‐free solution, the effective interligand distance b is ...
L K, Jang +4 more
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Osmotic Coefficients of Electrolyte Solutions
The Journal of Physical Chemistry B, 2008In this paper, the osmotic coefficient, phi, of electrolyte solutions is considered. According to the Gibbs-Duhem equation, the calculation of phi follows from that of the mean activity coefficient, gamma, based on a pseudolattice approach recently proposed.
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Osmotic coefficients and activity coefficients of lodic acid at high concentrations
Journal of Solution Chemistry, 1974Isopiestic vapor pressure measurements have been used to determine the osmotic coefficients of aqueous solutions of iodic acid at molalities from 0.1 to 17 mole-kg−1 at 25°C. The isopiestic standards were solutions of sodium chloride and solutions of sulfuric acid. Because of the corrosive nature of iodic acid, platinum cups were used.
Saul Goldman +2 more
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Osmotic Coefficients and Activity Coefficients in Mixed Electrolyte Solutions
Journal of the American Chemical Society, 1961The excess free energy per mole of ionic strength in mixed electrolyte solutions is expressed as a linear function of this property of the solutions of single electrolytes at the same ionic strength, plus a quadratic term in the ionic strength fractions and plus higher deviation terms of the expansion around the midpoint, of which the cubic term is ...
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Osmotic Second Virial Coefficient of Methane in Water
The Journal of Physical Chemistry B, 2013A correlation-function-based scheme is proposed for calculating the osmotic second virial coefficient B for solutes that dissolve very little in a solvent. The short-distance contribution to B, a volume integral of the solute-solute pair correlation function h(r) from 0 to some finite distance rc, is evaluated with h(r) obtained by molecular simulation.
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Osmotic coefficients of atomistic NaCl (aq) force fields
The Journal of Chemical Physics, 2006Solvated ions are becoming increasingly important for (bio)molecular simulations. But there are not much suitable data to validate the intermediate-range solution structure that ion-water force fields produce. We compare six selected combinations of four biomolecular Na–Cl force fields and four popular water models by means of effective ion-ion ...
Hess, B., Holm, C., van der Vegt, N.
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Electrolyte and Water Osmotic Flow Coefficients in Nafion Membranes
Berichte der Bunsengesellschaft für physikalische Chemie, 1989AbstractThe isothermal transport coefficients describing the NaCl, volume and water osmotic flows across Nafion membranes are studied. These transport coefficients and others already reported are used to obtain the Lij phenomenological coefficients related to the flows of ions and water in the membrane.
SCIBONA, Giancarlo +4 more
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The osmotic and activity coefficients of some pyrophosphates
The Journal of Chemical Thermodynamics, 1979Abstract Osmotic and activity coefficients are reported for three pyrophosphate salts: K4P2O7, Na4P2O7, and K2H2P2O7 at (298.15 ± 0.01) K. The results are discussed in terms of the pyrophosphates as models for biologically important compounds such as the sodium and potassium salts of adenosine-5′-triphosphate.
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Osmotic coefficients of trialkyl phosphates in water
Journal of Chemical & Engineering Data, 1984Osmotic and activity coefficients are reported at several temperatures for triethyl phosphate (TEP) and tripropyl phosphate (TPP) at low concentrations in water. TEP forms solutions that do not depart from ideality as much as do those formed from TPP.
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On the Osmotic Second Viral Coefficient of Athermal Polymer Solutions
Macromolecules, 1974The osmotic second virial coefficient A2(n) of athermal polymer solutions is discussed for a simple lattice model, each molecule (n - mer) corresponding to a self-avoiding walk of n - 1 steps on a simple cubic lattice. The exact evaluation of A2(n) by McKenzie and Domb (up to n = 7) is extended by a Monte-Carlo technique up to n = 40 and it is ...
Bellemans, André, Janssens, Marcel
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