a. (10 points) Assume a leak in a 5000 gal underground storage tank containing water contaminated with Aroclor 1254 and acetone. Estimate how far each contaminant will travel in one

year 7b. (10 points) A student uses a reactor to mimic the environment for a class demonstration. The sealed reactor contains 500mL water, 200 mL soil (1 percent organic carbon and density of 2.1g/cm"), and 300 mL air. The temperature of the reactor is 25°C. After adding 100 ugTrichloroethylene (TCE) to the reactor, the student incubates the reactor until equilibrium isachieved between all three phases. The Henry's law constant for TCE is 10.7 L-atm/mole at 25°C,and TCE has a log Kw of 2.42. Assuming that no chemical or biological degradation of TCE occurs during the incubation. a. What is the aqueous phase concentration of the TCE at equilibrium? b. What is the mass of TCE in the aqueous and sorbed phases after equilibrium is attained?