chemical reaction engineering reviewer multiple choice with answer PDF

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What are two advantages of a Fluidized bed reactor? easy catalyst replacement. high conversion. small scale operation. can be used in series. easy to maintain because of no moving parts. little tendency to develop hot spots. What is a semibatch reactor NOT commonly used for? Two-phase reactions Proc...

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1. What are two advantages of a Fluidized bed reactor? 1. easy catalyst replacement. 2. high conversion. 3. small scale operation. 4. can be used in series. 5. easy to maintain because of no moving parts. 6. little tendency to develop hot spots. 2. What is a semibatch reactor NOT commonly used for? 1. Two-phase reactions 2. Processes with unwanted side reactions 3. Low labor cost processes 4. Processes with minimal temperature variation 3. When is a batch reactor NOT used? 1. Testing of new products: 2. Obtaining high conversion 3. Processing large volumes of material 4. Manufacture of expensive products 4. The rate law for Rj, is a function of which of the following? 1. Separation technique 2. The leading economic indicators 3. Reactant concentration 4. Reactor type 5. The expression Ra=dCa/dt applies to which of the following systems? 1. PFR 2. Variable volume batch reactor 3. Constant volume batch reactor 4. CSTR 6. What is a significant advantage of a batch reactor? 1. Can be easily connected in series 2. High conversions 3. Large scale production 4. Low labor cost 7. What type of property is the chemical reaction rate? 1. Extensive property 2. Propensive property 3. Expensive property 4. Intensive property 8. What are the dimensions for the rate of reaction, -Rj?

1. Moles of j/time/mass catalyst 2. Moles of j/time/volume 3. Moles of j/time 4. 14 in. x 16 in. x 5 in. 9. Does dCa/dt = 0 indicate that no reaction has taken place? 1. Depends on the system 2. Depends on the time of day 3. No 4. Your guess is as good as mine 10. Which of the following is an indication that no reaction has taken place in a batch reactor? 1. Fj0=0 2. A red flag is out 3. dCa/dt = 0 4. Fj=0 11. Which of the following parameters NEVER changes in any type of chemical reaction? 1. Species identity 2. Total mass 3. Total volume 4. Temperature 12. What is the differential form of the mole balance for a tubular reactor? 1. Ra=dFaldt 2. Ra= dFa/dV 3. A mole here and there makes no difference. 4. RadNa/dV 13. Which of the following is an appropriate mole balance for a constant volume batch reactor? 1. 3 moles in = 3 moles out 2. Ra=dCa/dt + Ca d(lnV)/dt 3. Ra-k* Ca 4. Ra= dCa/dt In which direction is concentration assumed to be constant in a tubular reactor 1. Diagonally 2. North 3. Axially 4. Radially

14. What is ALWAYS true for a CSTR at steady state? 1. V*Rj=dNj/dt 2. Gj=0 3. dNj/dt = 0 4. It can walk a straight line!

KINETICS CHALLENGE 2 15. What are the units for k in the rate lawRa = k? 1. moles/time 2. moles*time/volume 3. 1/time 4. moles/volume/time...