2. Enthalpy balance - Reaction A- B is carried out in a steady-state flow reactor. The reaction is exothermic, so heat flow Q is used to maintain the reactor temperature at the same temperature as the feed. a. Write an expression for Q as a function of conversion XA, heat capacities CA and Cp.B and the heat of reaction AH measured at standard conditions. = rxn b. Given CA 0.02 kcal/(mol K), CPB = 0.015 kcal/(mol K), AH, 20°C, and FA A0 = p.B = -20 kcal/mol at 10 mol/s, calculate the heat flow Q required to maintain a temperature of 500°C for a final conversion of X = 0.5.