The Thermodynamics of Chromatography - Interactions Between the Atoms of Hydrogen, Carbon, Chlorine and Bromine and an Exclusively Dispersive Stationary Phase > Page 26

Previously the usual function for the relationship between distribution coeffcient and standard energy has been used, viz.,

                                    RTln(K)  =  -DGo

Thus,                     

For mathematical convenience (DG') will be used in the following algebraic arguments instead of (DG).

Let  (DG') be partitioned between (m) substituent atoms or groups (e.g. H, Br, CH2 etc.).

Then, 

                                                                                                                   (8) 

where (DG'r) pertains to the element (r) and (nr) is the number of atoms of element (r) in the solute molecule.