molecules associating with one molecule of solute to form the solvate
complex, a and b are constants taking into account the total
heat of the reaction and the molecular weight of the species. Using
different temperature values, it is possible to obtain the corresponding
density values and plotting ln (C) versus ln(q) at different
temperatures a straight line is obtained whose slope is equal to k.
Fig. 7 shows the concentration of lycopene in the supercritical
phase as a function of the solvent density at various temperatures.
Once the value of k is known, it is possible to calculate the constants
a and b and the following Chrastil equation can be obtained