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final00sol

# final00sol - ChE 344 Chemical Reaction Engineering Winter...

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ChE 344 Chemical Reaction Engineering Winter 2000 This questionnaire is to be removed from the exam and turned in before the exam begins. In the first assignment you were asked to describe the goals of the course in terms of critical thinking , creative thinking , and a fundamental understanding of CRE . How well do you feel you made progress towards each of these goals? 1) I feel my critical thinking skills were increased Significantly Not at All 5 4 3 2 1 2) I feel my creative thinking skills were increased Significantly Not at All 5 4 3 2 1 3) I feel I learned how to ask critical questions Significantly Not at All 5 4 3 2 1 4) I expect to use the techniques discussed in creative thinking (e.g. vertical thinking, lateral thinking, ideas from Barkers videos. Often Never 5 4 3 2 1 5) I feel I met the goal of obtaining a fundamental understanding of CRE topics covered in the course. Definitely Not at All 5 4 3 2 1 Name (optional)

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ChE 344 Chemical Reaction Engineering Winter 2000 Final Exam Open Book, Notes, and Web Name ____________________ SOLUTION _____________________________________ Honor Code___________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ Signed_____________________________________ 1) ____/10 pts 2) ____/15 pts 3) ____/20 pts 4) ____/20 pts 5) ____/15 pts 6) ____/15 pts 7) ____/ 5 pts Total 100 pts
344/W’00 Final Exam 1) The gas phase reaction 2A + B → 2C is carried out isothermally and isobarically. The reaction is first order in B and first order in A. The feed is equal molar in A and B and the entering concentration of A is 0.5 mol/dm 3 . The specific reaction rate is k = 4.0 dm 3 /mol•s. (8%) a) Write the rate of reaction, –r A , solely as a function of conversion, evaluating all parameters. 2A + B 2C A + 1 2 B C - r A = kC A C B C A = C Ao 1 - X ( 29 1 + X ( 29 C B = C Ao 1 - 0.5*X ( 29 1 + X ( 29 = y Ao = 0.5* 1 - 1 - 0.5 ( 29 = - 0.25 - r A = kC Ao 1 - X ( 29 C Ao 1 - 0.5*X ( 29 1 + X ( 29 2 = 4.0 dm 3 mol s 0.5 mol dm 3 2 1 - X ( 29 1 - 0.5*X ( 29 1 - 0.25*X ( 29 2 - r A = 1 - X ( 29 1 - 0.5*X ( 29 1-0.25*X ( 29 2 mol dm 3 s (2%) b) Write an indepth question related to CRE that requires critical thinking and explain why it requires critical thinking. Be sure to be as specific as you can. Must be related to Chemical Reaction Engineering and require critical thinking.

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344/W’00 Final Exam (15%) 2) The gas phase irreversible reaction is carried out isothermally in a PBR.
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final00sol - ChE 344 Chemical Reaction Engineering Winter...

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