The elementary, irreversible gas-phase reaction is carried out adiabatically in a PFR packed with a catalyst. Pure A enters the reactor at a volumetric flow rate of 20 dm3/s, at a pressure of 10 atm, and a temperature of 450 K. Additional information: All heats of formation are referenced to 273 K. (a) Plot and then analyze the conversion and temperature down the plug-flow reactor until an 80% conversion (if possible) is reached. (The maximum catalyst weight that can be packed into the PFR is 50 kg.) Assume that (b) Vary the inlet temperature and describe what you find. (c) Plot the heat that must be removed along the reactor ( vs. V) to maintain isothermal operation. AB C ? HA( ) 273 K 20 kcal/mol H B ( ) 273 K 15 kcal/mol H C ( ) 273 K 41 kcal/mol CPA CPB 15 cal/mol K CPC 30 cal/mol K k 0.01 dm3 mol s at 300 K E 10,000 cal/mol Q? A BC ? CPA 40 J/mol K CPB 25 J/mol K CPC 15 J/mol K HA 70 kJ/mol H B 50 kJ/mol H C 40 kJ/mol k 0.133 E R --- 1 450 1 T --- ? ? ? ? ? ? dm3 kg-cat s exp with E 31.4 kJ/mol