Editing Solubility (section)

===Other theories===
The [[Flory–Huggins solution theory]] is a theoretical model describing the solubility of polymers. The [[Hansen solubility parameters]] and the [[Hildebrand solubility parameter]]s are empirical methods for the prediction of solubility. It is also possible to predict solubility from other physical constants such as the [[enthalpy of fusion]].

The [[octanol-water partition coefficient]], usually expressed as its [[logarithm]] (Log P), is a measure of differential solubility of a compound in a [[hydrophobe|hydrophobic]] solvent ([[1-octanol]]) and a [[hydrophile|hydrophilic]] solvent (water). The logarithm of these two values enables compounds to be ranked in terms of hydrophilicity (or hydrophobicity).

The energy change associated with dissolving is usually given per mole of solute as the [[enthalpy of solution]].