Do it fast

4. A real CSTR can be modelled as two ideal reactors in series. In the first system, an ideal CSTR (space time = 3 min) is followed by an ideal PFR (space time = 2 min). In the second system, the PFR precedes the CSTR. For each system, determine the fraction of the tracer that exits the second reactor between time 2 and 3 mins for pulse injection of traer. The RTD for either system is given as follows E(t) = 0 +