A stream contains a waste chemical, W,with a concentration of 1 mol/liter. To meet Environmental Protection Agency and state standards, at least 90% of the chemical must be removed by reaction. The chemical decomposes by a second-order reaction with a rate constant of L5 liter/(mol hr). The stream flow rate is 100 liter/hour and two available reactors (400 and 2000 liters) have been placed in series (the smaller reactor is placed before the larger one). a. Write the modeling equations for the concentration of the waste chemical. Assume constant volume and density. Let: Cw r:concentration in reactor 1, units :mol/liter C1,,2: concentration in reactor 2, units:mol/liter F: volumetric flow rate, units: liter/hr Vr:liquid volume in reactor 1, units:liters V2: liquid volume in reactor 2, units:liters k: second-order rate constant, units liters/(mol hr) b. Show that the steady-state concentrations are 0.33333 mol/liter (reactor 1) and 0.09005 mol/liter