042109_hw4

042109_hw4 - Department of Chemical Engineering University...

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1 Department of Chemical Engineering Spring, 2009 University of California, Santa Barbara CHE 140A Problem Set No. 4 Due Tuesday, April 28, 2009 Problem 1: Fogler, 3-10(a,b), p. 134 (a) Write the reaction rate expression for the following reactions, assuming each reaction follows an elementary rate law: (1) C 2 H 6 ⎯⎯→ C 2 H 4 + H 2 O / \ (2) C 2 H 4 + 1 2 O 2 CH 2 CH 2 (3) (CH 3 ) 3 COOC(CH 3 ) 3 ←⎯⎯ C 2 H 6 + 2CH 3 COCH 3 (4) n C 4 H 10 i C 4 H 10 (5) CH 3 COOC 2 H 5 + C 4 H 9 OH CH 3 COOC 4 H 9 + C 2 H 5 OH (b) Write the rate expression for the reaction 2A + B C , assuming the following different cases: that the reaction (i) is second-order in B and overall third-order, (ii) is zero-order in A and first-order in B, (iii) is zero- order in both A and B, and (iv) is first-order in A and overall zero-order. Problem 2: Fogler, 3-11(a,b), p. 134-135 Set up a stoichiometric table for each of the following reactions and express the concentration of each species in the reaction as a function of conversion evaluating all constants (e.g., ε , Θ ). Then, assume the reaction follows an elementary rate law, and write the
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This note was uploaded on 12/29/2011 for the course CHE 140b taught by Professor Ceweb during the Fall '10 term at UCSB.

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042109_hw4 - Department of Chemical Engineering University...

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