5. For the isothermal isobaric gas-phase reaction 2A(g)-B (g) +C (g) + D(g) the feed is flowing at 4.0 L/s and has the molar ratio of A to Inert(I) of 10 to 8. The initial concentration of A (CA) is 0.25 mol/L. The reaction is irreversible. The rate is elementary; the rate constant is 2.0 L/mol- The desired conversion of A at the exit of the reactor/reactor train is 90%. a) The first reactor is an ideal plug flow-reactor (PFR) and the conversion after the single PFR is only 80%, determine the PFR volume required? (60 marks) b) An ideal continuously stirred tank reactor (CSTRS) is placed after the PFR, and the stream from the PFR goes completely to a CSTR, what is the volume of CSTR needed to achieve 90% conversion (based on the feed to PFR)? c) (40 marks) Other data: I is inert species. The constant, R is 0.08206 L-atm/mol K. Assume ideal-gas behavior and there is negligible pressure change in each of the gas reactor 2