The following adsorption data were reported by Thoma (1994) for the adsorption of a polyaromatic hydrocarbon (pyrene) on a local sediment (University lake, Baton Rouge, Louisiana).
The molecular weight of pyrene is 202 and its aqueous solubility is 130μg/L. Obtain the linear partition constant (in L/kg) for pyrene between the sediment and water. What is the adsorption free energy for pyrene on this sediment?