A CSTR Is used to produce a specialty chemical. The reaction is exothermic and exhibits first-order kinetics. .Laboratory analyses for the product quality are time consuming, requiring several hours to complete. No on-line composition measurement has been found satisfactory. It has been suggested that composition can be inferred from the exit temperature of the CSTR. Using the Unearned CSTR model in Example 4.8, determine whether this inferential control approach would be feasible. Assume that measure- merits of feed flow rate, feed temperature, and coolant temperature are available.