As already
discussed, the complex is considered to have zero vapor pressure and is
stationary in the column. Thus, there are now two parts of the denominator, (
)
the free solute activity coefficient and (1-c) the fraction of free solute.
The thermodynamic equilibrium constant (K1) is contained in the function,
| where (KEQ) | is the thermodynamic equilibrium constant, |
| (aDA) | is the activity of the complex in the stationary phase, |
| (aD) | is the activity of the solute in the stationary phase, |
| (aA) | is the activity of the stationary phase, |
| (gDA) | is the activity coefficient of the complex, |
| (gD) | is the activity coefficient of the solute, |
| and (gA) | is the activity coefficient of the stationary phase. |
