1. (35 points) An irreversible, elementary liquid reaction A2B is carried out in a PFR. The initial concentration of A is CA0=10mol/dm3. (a) (10 points) Write down the rate expression for the disappearance of A(rA) in terms of rate constant (kA) and the concentrations of species A and/or B(CA and/or CB). Express the units for kA in terms of mol,dm3, and h. (b) (5 points) Write down the concentrations of species A and B in terms of the initial concentration of A(CAO) and the conversion X. (c) (20 points) If the PFR has a volume of 20dm3 and the volumetric flow rate entering the PFR is 2 dm3/min, what is the conversion of the reactant A after the reaction in this PFR? Assume that kA has a value of 0.2 (in the units you determined above)