87. Solving a chemistry problem

171. When distributing salicylic acid between benzene and water at 25 C, the following data were obtained:
С1 mol/l 0.0940 0.210 0.558 0.912
С2, mol/l 0.0977 0.329 1.650 4.340
C1 - concentration of salicylic acid in the aqueous layer;
C2 is the concentration of salicylic acid in the benzene layer.
Using a graphical method, determine the distribution coefficient and write down the formula for the distribution law in relation to this case.