Half life period of decomposition of a liquid 'A' by irreversible first order reaction is 12 minutes. The time required for 75% conversion of 'A' is _____________ minutes?
Correct answer: B. 24
- A. 18
- B. 24
- C. 6
- D. 12
Explanation
A 75% conversion leaves 25% of A, or one-fourth of its initial amount. For a first-order reaction this requires two half-lives, so the time is 2 × 12 = 24 minutes.
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