| a |
activity for aqueous solutions using molal concentrations (dimensionless) |
| CaF2 |
fluorite |
| γ |
activity coefficient when molality is used (dimensionless) |
| I |
ionic strength |
| Ksp |
solubility product constant (dimensionless) |
| λ |
activity coefficient when mole fraction is used (dimensionless) |
| m |
molal concentration |
| mi |
molality of solute or ion, i |
| µo |
chemical potential of the substance in a defined standard state usually referenced to 25 oC and 1 bar pressure for ideal conditions (joules mol -1) |
| Ω |
degree of saturation or saturation ratio |
| R |
molal gas constant (8.3144 joules mol-1 K-1) |
| SI |
saturation index = log(Ω) |
| T |
temperature (T), degrees K |
| X |
mole fraction (dimensionless) |
| zi |
charge on an ion |
