It should be noted however that in a liquid solution the activity coefficient of a given ion ( e . g.
32.
Frequently, the fugacity of the pure liquid is used as a reference state when defining and using mixture activity coefficients.
33.
When each activity is replaced by the product of a concentration and an activity coefficient, the equilibrium constant is defined as
34.
The activity of a substance in solution depends on the product of its concentration and the activity coefficient in that solution.
35.
In that case the activity coefficients cross at x 1 = 0.5 and the limiting activity coefficients are equal.
36.
In that case the activity coefficients cross at x 1 = 0.5 and the limiting activity coefficients are equal.
37.
The concentrations of species in equilibrium are usually calculated under the assumption that activity coefficients are either known or can be ignored.
38.
These parameters are then entered in several equations to obtain the limiting activity coefficient of an infinitely diluted solute in a solvent.
39.
The database contains limiting activity coefficients of binary systems of non-polar, polar and hydrogen compounds, but no water.
40.
The activity coefficient of the solute and solvent can be extended to other concentrations by applying the principle of the Margules equation.
