The ratio of volumes of the mixed reactor to the plug flow reactor (for identical feed composition, flow rate, conversion, and for all positive reaction orders) is always ?
Correct answer: C. > 1
- A. 1
- B. < 1
- C. > 1
- D. Equal to the order of reaction
Explanation
For a positive-order reaction, the rate decreases as conversion increases, so a mixed reactor operates everywhere at the low exit concentration rate. A plug-flow reactor uses higher rates near the inlet and therefore needs less volume, making the mixed-to-plug-flow volume ratio greater than one.
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