A packed-bed reactor is injected with a tracer. The pulse is injected into the bed about 4 particle diameters from the entrance, which is not perfect. The variance in the injection is= 15 s ². The variance at the measuring point 3 m downstream is= 50 s ². The superficial velocity is 0.01 m/s.
(a) Calculate the dispersion coefficient
(b) Calculate the conversion for a first-order reaction in which k = 0.02 s ^-1