The size of plug flow reactor (PFR) for all positive reaction orders and for any given duty, is _____________________ that of mixed reactor?
Correct answer: C. Smaller than
- A. Greater than
- B. Equal to
- C. Smaller than
- D. Unpredictable from the data
Explanation
For positive-order reactions, the reaction rate generally falls as reactants are consumed, so a PFR uses the high reactant concentration at the inlet more effectively than a CSTR. Consequently, the PFR volume is smaller for the same conversion and feed.
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