MEAN_GAMMAS

This keyword data block is used to define the stoichiometry of salts to be able to calculate mean activity coefficients.

Example data block

Line 0:  MEAN_GAMMAS

Line 1a:      NaCl     Na+  1 Cl- 1

Line 1b:      MgBr2    Mg+2 1 Br- 2

Explanation

Line 0: MEAN_GAMMAS

MEAN_GAMMAS is the keyword for the data block.

Line 1: Salt_formula list of species, coefficient

Salt_formula –Chemical formula for a salt for which mean activity coefficients can be calculated.

List of species, stoichiometry –A series of pairs of aqueous species name and stoichiometric coefficient. Most salts will have two pairs of data, one for a cation and one for an anion.

Notes

Mean activity coefficients can be calculated with the Basic function MEANG. This is the only use of the MEAN_GAMMAS data block.

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