25 mg chemical Y (log kow = 2.88) is added to a microcosm (i.e., tank) that contains 1 kg soil, 20 L water. Chemical Y has negligible volatility (very low partitioning to air). The soil is mized with water for several days until equilibrium (between the chemical concentration on the soil and in the water) is reached.
If the soil contains 2% organic carbon and it can be assumed that koc=0.5*kow
What is the concentration of the chemical in the water (mg/L), and in the soil (mg/kg)?