P8-6b Consider the following system of gas-phase reactions: AXABAYrX=k1CA1/2rB=k2CArY=k3CA2k1=0.004(moldm)31/2min1k2=0.3min1k3=0.25dm3/molmin B is the desired product, and X and Y are foul pollutants that are expensive to get rid of. The specific reaction rates are at 27C. The reaction system is to be operated at 27C and 4atm. Pure A enters the system at a volumetric flow rate of 10dm3/min. (a) Sketch the instantancous selectivities (SBXXSBY, and SBXY=rB/(rX+rY)) as a function of the concentration of CA. (b) Consider a series of reacifrs. What should be the volume of the first reactor? (c) What are the effluent concentrations of A, B, X, and Y from the first reactor? (d) What is the conversion of A in the first reactor? (e) If 99% conversion of A is desired, what reaction scheme and reactor sizes should you use to maximize SAxY ? (f) Suppose that E1=20,000cal/mol,E2=10,000cal/mol, and E3=30,000 cal/mol. What temperature would you recommend for a single CSTR with a space time of 10min and an entering concentration of A of 0.1mol/m3 ? (g) If you could vary the pressure between 1 and 100atm, what pressure