- Question 1 For The Competing Reactions Rxn 1 A 2b C K 2a 3b Q Rxn 2 C Is The Desired Product And Q The Undesired 1 (84.38 KiB) Viewed 25 times
Question 1 For the competing reactions: Rxn 1 A + 2B C K₂ 2A + 3B → Q Rxn 2 C is the desired product and Q the undesired product. If the rates of reaction of A for each of the reactions are: r₁A = -K₁CAC r2A = -K₂ C² C3 1.3 Write an expression for the overall selectivity, Sc/Q. [3] 1.4 The reaction is done in a liquid-phase CSTR which achieves a conversion of 73% of the A in the feed and 71% of the B in the feed. The initial concentration of A is 2 mol/L and A and B are fed in a 1:2 ratio. If k₁ = 0.06 and k₂ = 0.01 with units in L, mol and s as given in your answer in Q1.2. 1.4.1 What is the final concentration of A and B? [6] [5] 1.4.2 Calculate Sc/Q- 1.4.3 There is no product in the feed. If the space time is 30.4 s, what is the final concentration of C and Q? [11] 1.4.4 Based on your answer above, would you recommend using a CSTR in order to maximise the production of C and minimize the production of Q? [2]