1. A first-order reversible reaction AB is taking place in a plug-flow reactor (PFR) with a feed concentration of 2mol/L and a flow rate of 0.5L/min. The rate constant for the forward reaction is 0.02min1 and the rate constant for the reverse reaction is 0.01min1. What is the length of the reactor required to achieve 80% conversion of A ? [15] 2. Consider a batch reactor with a volume of 100L that is initially charged with a mixture of A and B at a mole ratio of 2:1. The reaction A+BC is first-order with a rate constant of 0.01min1. What is the time required to achieve 90% conversion of A ? [15] 3. Explain how helpful it is knowing the desired conversion in the initial stages of designing a reacter. 4. What technical and economic advantages does a PFR have as opposed to a CSTR