The following gas-phase reaction follows an elementary rate law: A+B2C+D This reaction occurs in a PFR under isothermal conditions at 107C. At this temperature, the reaction rate constant is 0.4L/molmin. The inlet flow contains A at 1mol/min and B at 1 mol/min, and it enters the reactor at 8atm. A final conversion of 85% is desired. a. What is the volume of the reactor that is required for this conversion, if there is no pressure drop? b. Now consider that this reaction is performed in a PBR, resulting in a pressure change between the inlet and outlet. Write the equation that describes how this pressure changes within the reactor, in terms of conversion and constants