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Question 2: Other information: Reactant A decomposes by three simultaneous reactions to form 3 products (X,B and Y ) as shown below. Only B is the desired product while the other two products X and Y are the undesired products. k1=1104mole/Lsk2=1.51031/sk3=8103L/moles AXABAYr1=k1r2=k2CAr3=k3CA2 XA is molar fractional conversion of A based on inlet to the reactor train. All conversions are based on CA0. The inlet concentration to the reactor/reactor train (CAO) is 0.5mole/L, and the inlet volumetric PFR means plug flow reactor, and CSTR means continuously stirred tank reactor. flow rate vo is 2L/s. The plot of differential selectivity of B (sB) versus CA0CA is shown in Figure 2, and is found to have a sB maximum at CA0CA=0.390 (i.e. XA=78% ) (Figure 2). a) If the desired conversion is 75% (i.e. XAI in Figure 2), and a CSTR is used, what is the concentration of A at the reactor exit? (3 marks) ii) determine the size of CSTR needed. (10 marks) iii) determine the concentration, total selectivity and yield of B achieved. (7 marks) b) If the desired conversion is now raised to 95% (i.e. X2 in Figure 2), so that a second reactor is placed in series with the first reactor in part (a) to achieve this, whereby the Figure 2. Profile of differential selectivity of B with respect to (CA0CA). output from the first reactor is directly fed to the second reactor without any removal, i) what kind of reactor (i.e. PFR or CSTR) should be used as the second reactor, and explain your reasoning? (3 marks) ii) what is the concentration of B and selectivity of B (based on the feed to the second reactor) at the exit of the second reactor? (7 marks)