The conversion for a first order liquid phase reaction. A → B in a CSTR is 50%. If another CSTR of the same volume is connected in series, then the % conversion at the exit of the second reactor will be_____________________?
Correct answer: B. 75
- A. 60
- B. 75
- C. 90
- D. 100
Explanation
For the first CSTR, X = kτ/(1 + kτ) = 0.5, giving kτ = 1. A second identical CSTR leaves CA/CA0 = 1/(1+kτ)^2 = 1/4, so the total conversion is 75%.
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