Jeremy Kinetics.docx

QUIZ 1. A gaseous feed of pure A (2 mols/L, 100 mmol/min) decomposes to give a variety of products in a mixed flow reactor. The kinetics of the decomposition is represented by A→2.5 Products, -rA=10 min-1 CA. (a) Find the volume of the reactor needed for 80% decomposition of reactant A. (b) Find the conversion possible in a 20 L reactor. 2. An aqueous feed of reactants A and B(400L/min, 100 mmol A/L, 2 mol B/L) is to be converted to product in a mixed flow reactor. The kinetics of the reaction is represented by A + B→R, -rA=200CACB, mol/L.min. (a) Find the reactor needed for 80% decomposition of reactant A. (b) Find the conversion in a 4-liter reactor. 3. A stream of gaseous reactant A at 1000 mmol/L enters a plug flow reactor (V=100cm3) and decomposes isothermally (A→4R). The following data are thereby obtained for various feed rates. From this information find the rate of the reaction. Find the volume of the plug flow reactor needed for 66.7% conversion of 1L/s of A(CAo=0.50 mol/L) feed t, sec CA, mmol/L

100 10

48 50

25 100

12 200

3 500

4. Gaseous reactant A(1000mmol/L) enters a plug flow reactor(V=1 L) and there reacts isothermally and reversibly(A↔3R). The following data are obtained at various feed rates. From this information find the rate of reaction. VA, L/min CA, mmol/L XA

8.1 750 0.1

2.3 500 0.25

1.3 400 0.3333

0.6 300 0.4375

0 250 0.5

5.Pure A (1kmol/h, 1 atm) is fed to a plug flow reactor where it reacts reversibly and isothermally at 1219 K with elementary kinetics: A↔2R; k1=200/hr and kP=1 atm. Find the (a) size of the reactor needed for 40% conversion and (b)equilibrium conversion.