MCQ
A first order reaction is $50\%$ completed in $1.26 \times 10^{14}s.$ How much time would it take for $100\%$ completion?
- A$1.26 \times 10^{15}s.$
- B$2.52 \times 10^{14}s.$
- C$2.52 \times 10^{28}s.$
- ✓Infinite.
✓
Answer
Correct option: D.
Infinite.
It is impossible to perform $100\%$ of the reaction, whole of the substance never react.
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