. A first-order irreversible reaction: A B is taking place in a continuous stirred-tank reactor (CSTR) with a volumetric flow rate of 10 L/min. The reaction rate constant is 0.02 min^-1 and the feed concentration of A is 1 mol/L. What is the volume of the reactor required to achieve 90% conversion? 2. Consider a gas-phase reaction: A + 2B C [10] that takes place in a packed-bed reactor (PBR) with a catalyst volume of 0.2 L. The feed rate of A is 0.1 mol/s and the feed rate of B is 0.2 mol/s. The reaction rate constant is 0.01 L/(mol*s) and the pressure drop across the catalyst bed is 2 bar. What is the conversion of A at the exit of the reactor? (Hint use Ergun equation) [15] Question 2 [40 Marks] 1. A first-order reversible reaction AB is taking place in a plug-flow reactor (PFR) with a feed concentration of 2 mol/L and a flow rate of 0.5 L/min. The rate constant for the forward reaction is 0.02 min and the rate constant for the reverse reaction is 0.01 min. What is the length of the reactor required to achieve 80% conversion of A? [15] 2. Consider a batch reactor with a volume of 100 L that is initially charged with a mixture of A and B at a mole ratio of 2:1. The reaction A + B C is first-order with a rate constant of 0.01 min. 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 reactor. [5] 4. What technical and economic advantages does a PFR have as opposed to a CSTR. [5]