ECM5_09WINTER_Quiz#3Soln

ECM5_09WINTER_Quiz#3Soln - ECM 5 Winter, 2009 Quiz 3...

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1 ECM 5 Winter, 2009 Quiz 3 Solutions 1 . (3 points) A liquid-phase reaction was carried out in a backmix reactor (CSTR) at steady state and at constant temperature. There was no volume change on reaction. The reaction stoichiometry was A B. Data are given in the table below. concentration of A in feed, C A0 , mol/L concentration of A in product, C A , mol/L reactor volume V , L volumetric flow rate of feed, v , liter/min 2.0 0.20 100 5 In a new process to be designed for the same reaction with the same feed at the same temperature, the feed flow rate is to be three times the value stated in the table and the product concentration is to remain the same. What must the volume of the new reactor be? Using the data that we have above, we want to use our design equation for no volume change to determine the reaction rate for the first series. r A = C A " C Ao V v = (0.2 " 2) mol L 100 L 5 L min = " 0.09 mol L min Because we know for cases of the same temperatures that the reaction rate depends only
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ECM5_09WINTER_Quiz#3Soln - ECM 5 Winter, 2009 Quiz 3...

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