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Osmotic Coefficient

Applicable units are those of quantitykind:OsmoticCoefficient

The "Osmotic Coefficient" is a quantity which characterises the deviation of a solvent from ideal behavior.

http://en.wikipedia.org/wiki/Osmotic_coefficient

http://www.iso.org/iso/catalogue_detail?csnumber=31894

$\varphi = -(M_A\sum b_B)^{-1} \ln a_A$, where $M_A$ is the molar mass of the solvent $A$, $\sum$ denotes summation over all the solutes, $b_B$ is the molality of solute $B$, and $a_A$ is the activity of solvent $A$.

$\varphi$

The "Osmotic Coefficient" is a quantity which characterises the deviation of a solvent from ideal behavior.