You are studying the dimerization of arylmercurial compounds in hexamethylphosphoramide solutions in the presence of a soluble [ClRh(CO)2]2 catalyst. Consider the dimerization of CH3OC6H4HgCl (species A below) that proceeds as follows 2A B + Hg + HgCl ⎯⎯→ with the rate law 2 A A − = r k c At 80°C in the presence of 0.5% catalyst, 3 -1 -1 k 3.0 10 L mol s − =    . Species A is dissolved at a concentration of 0.19 M in the liquid feed, which is supplied at 200 L/hr. You are considering the use of two alternate configurations of reactors operated isothermally at 80°C. For both configurations, calculate the conversion leaving the reactor network. (a) 100L PFR, followed by 200L CSTR (b) 200L CSTR, followed by 100L PFR (c) What general principle regarding the arrangement of reactors under isothermal conditions does this problem exemplify