- A The Elementary Reaction Ak K2 2c 1 2 Is Catalyzed By H So The Reaction Is To Be Carried Out In A Semibatch React 1 (71.65 KiB) Viewed 31 times
a The elementary reaction Ak_k2_%2C (1) (2) is catalyzed by H,SO, the reaction is to be carried out in a semibatch reactor that has with a heat exchanger inside with UA = 35,000 cal/hr/K and an ambient temperature of 290 K. Pure A enters at a concentration of 4 mol/dm', a volumetric flow rate of 20 dm/hr, and temperature of 290 K. Initially there are 15 dm in the reactor which contains 1.0 mol/dm of A and 1.0 mol/ dm' of the catalyst H,SO,. The reaction rate is independent of the catalyst concentration. The initial temperature of the reactor is 290 K and Ta = 17°C. CAO = 4 mol/dm VO = 20 dm/hr Та Cai = 1 mol/dmat 290 K = = Additional data: ka = 2/hr at 300 K with Ela = 10,000 cal/mol k2n = 0.5/hr at 300 K with Ex = 7,000 cal/mol AHRxta = -15,000 cal/mol A AHRxzb = +12,000 cal/mol B CPA = 50 cal/mol/K Cps = 50 cal/mol/K Crc = 25 cal/mol/K R = 1.987 cal/mol/K (a) For UA = 35,000 cal/hr/K at what time between 0 and 1 hour 1) is the concentration of A a maximum? 2) is the concentration of A a minimum? 3) is the concentration of B a maximum? 4) is the temperature a maximum? (b) Vary the product UA between 35,000 and 70,000 cal/hr/K (within $5,000) to find what the value of UA that maximizes the concentration of B after one hour. t= t= t= t= UA=