An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will__________________?
Correct answer: D. Be more in PFR than in CSTR
- A. Be more in CSTR than in PFR
- B. Depend on the temperature
- C. Be same in both cases
- D. Be more in PFR than in CSTR
Explanation
For a first-order reaction, a PFR gives the highest conversion for a specified volume and flow rate because every fluid element experiences continuously decreasing reactant concentration. A CSTR operates throughout at the lower outlet concentration, so its conversion is lower.
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