# Resolve RDF Terms

quantitykind:OsmoticCoefficient
http://qudt.org/vocab/quantitykind/OsmoticCoefficient

### Recommended prefix

quantitykind:

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Osmotic Coefficient
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http://en.wikipedia.org/wiki/Osmotic_coefficient
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http://www.iso.org/iso/catalogue_detail?csnumber=31894
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$$\varphi = -(M_A\sum b_B)^{-1} \ln a_A$$, 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 $$A$$.
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$$\varphi$$
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The "Osmotic Coefficient" is a quantity which characterises the deviation of a solvent from ideal behavior.