PI-15 The reaction A B is to be carried out isothermally in a continuous-flow reactor. Calculate both. the CSTR and PFR reactor volumes necessary to consume 99% of A (i.e., CA 0.01CA) when the entering molar flow rate is 5 mol/h, assuming the reac- tion rate-is: mol h-dm³ with k = 0.0001 s (a) -= k with k=0.05 (b) -rkC (c) -^= kC with k=3 dm³ mol-hi (Ans.: V=99 dm³) (Ans: VESTR 66,000 dm³) The entering volumetric flow rate is 10 dm/h. (Note: FA CA. For a constant volumetric flow rate u ve, then FA CAU. Also, CAD-FA 15 mol/h]/[10 dm/h] = 0.5 mol/dm³.) (d) Repeat (a), (b), and (e) to calculate the time necessary to consume 99.9% of species A in a 1000 dm' constant volume batch reactor with CAD 0.5 mol/dm'. P2-7B The exothermic reaction A B+C ile on chemical kinetics or was carried out adiabatically and the following data recorded: x 0 -A (mol/dm³ min) 1.0 0.2 1.67 04 0.45 0.6 0.5 08 0.9 5.0 5.0 5.0 5.0 1.25 0.91 The entering molar flow rate of A was 300 mol/min. (a) What are the PFR and CSTR volumes necessary to achieve 40% conver sion? (V 72 dm', Veste 24 dm³) (b) Over what range of conversions would the CSTR and PFR reactor vol- umes be identical? (c) What is the maximum conversion that can be achieved in a 105-dm CSTR? (d) What conversion can be achieved if a 72-dm³ PFR is followed in series by a 24-dm³ CSTR? (e) What conversion can be achieved if a 24-dm' CSTR is followed in a series by a 72-dm³ PFR? (f) Plot the conversion and rate of reaction as a function of PFR reactor vol- ume up to a volume of 100 dm³.