For the competing reactions: A+Bk1fk1rC2A+Ck22Q C is the desired product and Q the undesired product. If the rates of reaction of A for each of the reactions are: r1A=k1fCACB+k1rCCr2C=k2CA2CC 1.1 Are these reactions series, parallel or complex? [2] 1.2 What is the net rate of reaction for each of the species in the reactions above written in terms of the rate constants and the concentrations of A,B and C ? 1.3 What are the units of k1f,k1r and k2 (use L, mol and s )? 1.4 Write an expression for the instantaneous selectivity, SC/Q and explain how you would maximise the production of C. 1.5 Write an expression for the overall selectivity, SC/Q. 1.6 The reaction is done in a liquid-phase CSTR which achieves a conversion of 20% of the B in the feed, and the final concentration of Q is 0.1mol/L. The initial concentration of A is 0.9mol/L and A and B are fed in a 1:4 ratio; the initial volumetric flowrate, v0=200L/s. If k1f=0.03 and k2=0.005 with units in L,mol and s as given in your answer for Q1.3: 1.6.1 What are the exit molar flowrates of A, B, C and Q? 1.6.2 Calculate SC/Q. 1.6.3 What are the exit concentration of A,B and C ? List your assumptions [4] 1.6.4 Calculate k1r