Activity osmotic coefficient

ACTIVITY, ACTIVITY COEFFICIENTS, AND OSMOTIC COEFFICIENTS OF STRONG ELECTROLYTES... 

Equations for single ion activity coefficients [4], osmotic coefficients [17], and other thermodynamic quantities [28], as well as applications in different cases (e.g., H2SO4 and H3PO4 solutions) have been given by Pitzer and coworkers [4,20]. 

Equations for the Work Function, Activity Coefficient, and Osmotic Coefficient for Particles Having Ion-Dipole Characteristics... 

In this paper the authors propose to make a general derivation for the work function of a particle having the characteristics of an ion-dipole. Further, it is planned to apply this result to obtain equations for the activity coefficient and osmotic coefficient for an ion-dipole particle. The theory will be checked by applying it to published data on the activity and osmotic coefficients for ions, dipole, and ion-dipoles. 

Figure 18.6 Thermal properties of aqueous NaCl solutions as a function of temperature, pressure and concentration, (a) activity coefficient (b) osmotic coefficient (c) relative apparent molar enthalpy and (d) apparent molar heat capacity. The effect of pressure is shown as alternating grey and white isobaric surfaces of 7 , , L, and Cp at p = 0.1 or saturation, 20, 30, 40, 50, 70, and 100 MPa, that increase with increasing p in (a), (b), and (d), and decrease with increasing P in (c).

Table A.2 is model output for seawater freezing at 253.15 K. Beneath the title, the output includes temperature, ionic strength, density of the solution (p), osmotic coefficient amount of unfrozen water, amount of ice, and pressure on the system. Beneath this line are the solution and gaseous species in the system. The seven columns include species identification, initial concentration, final (equilibrium) concentration, activity coefficient, activity, moles in the solution phase, and mass balance. The mass balance column only contains those components for which a mass balance is maintained. The number of these components minus 1 is generally the number of independent components in the system (in this case, 8 — 1 = 7). The mass balances (col. 7) should equal the initial concentrations (col. 2). This mass balance comparison is a good check on the computational accuracy.

EpbO ipbso = 1-682 V pb = -0.3588 V mean activity coefficients and osmotic coefficients for H2S04 are as follows ... 

Carboxylate group fraction of total ionic groups of heparin Sulfete group fraction of total ionic groups of heparin Practical osmotic coefficient Activity coefficient of species i Activity coefficient quotient Concentration of species i Ionic strength... 

Goldberg et al. [79GOL/NUT], reviewed the available literature data, and provided tables of recommended values for the activity coefficients and osmotic coefficients for solutions of Ni(N03)2 in water at 298.15 K. However, there were no studies that allowed the tables to be extended to saturated solutions of Ni(N03)2 6.00H20(cr) at... 

Lietzke, M.H., and Stoughton, R.W., 1962, The calculation of activity coefficients from osmotic coefficient data Jour. Phys. Chem., v. 66, pp. 508-509. 

The references provide additional information on water activity, osmotic coefficient, and enthalpy of vaporization. 

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