Question 3: (12 points) The reaction CO + Cl2 COCI, has been studied over an activated carbon catalyst. Experimental data show that the rate of this reaction is co Pol rcoch 1 + Ki Patz + KzPcolz , (a) Propose an adsorption-surface reaction-desorption mechanism and a rate-limiting step consistent with the rate law. (b) If K = 5 atm" and K2 = 1 atm', what is the ratio of sites containing Cl2 to those containing COCl2 when the conversion is 20%? What fraction of total sites is vacant? The feed is equal molar in CO and Cl2 with Pco. Pcho = 2 atm. (c) The mos feed rate of Co to a fluidized CSTR is 5 mol/min. The feed is equal molar in CO and Cl2 with Poo = Pclzo = 2 atm. Determine the catalyst weight needed to reach 60% conversion of CO. [k = 0.09 mol/atm/kg cat/min, K1 = 5 atm and K2 = - Vatm-1 =S