1. A CSTR is designed for a first-order reaction. (1)Develop the equation to describe the relationship among the concentration in the in flow(Co), the concentration in the effluent(C) and hydraulic detention time (X), whlie X=V/Q (2) If the required removal or conversion is 90% and reaction rate constant, k, is 0.5/hr, what's the detention time for this CSTR? (3)Repeat the problem (2), except that k is 0.75/hr 2. For the reversible reaction, 2A<-->B batch type experiments with different inital concentration (Co) were conducted. The results are as followed: C(mmol/L) t(min) Co=50mmol/L Co=100mmol/L 1 45 91 3 37 76 5 33 68 10 31 63 Determine the rate law for the forward reaction at the initial time. 3.The concentration of compound A in a beaker with well mixing is varied with time as the following table. t(min) C(mmol/L) 0 100 5 85 10 78 20 72 50 65 (1)Determine K1 and a (reaction order) (2)If Co = 500 mmol/L, C = 10 mmol/L , Q = 2m3/hr , calculate the reactor volume required for (A)CSTR (B)PFR. --

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