A first order irreversible reaction, A → B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that _____________ in the two reactors?
Correct answer: B. Conversion in both will be the same but concentrations will be different
- A. Both conversion as well as concentration are same
- B. Conversion in both will be the same but concentrations will be different
- C. Both the conversion as well as concentrations will be different
- D. None of these
Explanation
For a first-order reaction, the mole balance gives dNA/dt = -kNA, so the fractional conversion after a given time is independent of reactor volume. The concentration changes because the variable-volume reactor has a different volume, making option b correct.
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