The A2.5 R second order homogeneous gas phase reaction is carried out in a laboratory-scale PFR with an inner diameter of 20 cm and a length of 1.2 m. Initially, pure substance A is fed into the reactor at a pressure of 4 atm, a temperature of 362 K and a volumetric flow rate of 60 L/min, and it is determined that the conversion is 80% in the stream leaving the reactor. Then, the same reaction is carried out in a commercial plant in a PFR where the feed stream consisting of initially 10 atm pressure, 362 K temperature and [60% A + 30% inert + 10% R] is fed with a volumetric flow rate of 5600 L/min and it is desired to take place with 95% conversion of A. a) Calculate the volume of a single reactor to be used in commercial operation. b) Determine how many PFRs with an inner diameter of 20 cm and a length of 1.2 m should be used in the enterprise. [Matter A can be considered an ideal gas].