assignment # 5

assignment # 5 - CHBE 241 Material and Energy Balances...

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CHBE 241 Material and Energy Balances Department of Chemical and Biological Engineering The University of British Columbia Assignment #5 Due: Friday, 17 November 2006, 4:30pm CHBE Main Office 1. In the first step in the manufacture of over-the-counter pain medication ibuprofen, isobutyl- benzene (C 10 H 14 ) and acetic anhydride (C 4 H 6 O 3 ) react over a hydrogen fluoride catalyst to make isobutylacetophenone (C 12 H 16 O) with acetic acid (CH 3 COOH) as the byproduct: C 10 H 14 + C 4 H 6 O 3 C 12 H 16 O + CH 3 COOH 1200 mol/h isobutylbenzene and 1000 mol/h acetic anhydride are fed to a continuous-flow steady-state reactor. Chemical analysis of the exit stream from the reactor reveals that the stream contains 30 mol% acetic acid. What is the rate of consumption of isobutylbenzene inside the reactor? What is the flow rate of isobutylbenzene out of the reactor? What is the fractional conversion of isobutylbenzene, acetic anhydride, and isobutylacetophenone? 2. Ethylene glycol (HO-CH
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assignment # 5 - CHBE 241 Material and Energy Balances...

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