Problem 5. The river and tributary shown in Fig. 6.23 have flow rates of 4.0 and 0.5m3/s, respectively. Under the conditions given, the flow split at point A is 0.7 to QAB and 0.3 to QAC. Tracer studies have been performed, and the flow from A to B to C can be characterized as a PFR followed by CFSTR followed by a PFR, while the flow from A to C behaves as a single PFR. Volumes of these reactors are given below. For steady-state conditions, determine the concentration of reactant A at point C for the following conditions: rA=kCAk=0.5d1CA=50g/m3(intributary)CA=100g/m3(inriver)