where (
) is
the specific retention volume of a complexing solute with a vapor
pressure (
) with a pure complexing stationary phase
having a molecular weight (
);

where (
) is
the specific retention volume of a complexing solute with a vapor
pressure (
) with a pure noncomplexing stationary
phase having a molecular weight (
).
 
If the two stationary phases have the same physical properties, except for one being polar (having a complexing capability), then a reasonable assumption would be that,

By rearranging,
