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First Order Reaction

The time for ...

Question

The time for half-life period of a certain reacting $A \to$ product is an hour. How much time does it take for its concentration to come from 0.50 to 0.25 mol $L^{- 1}$ if it is a zero order reaction?

A

0.25h

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B

1h

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C

4h

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D

0.5h

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Solution

The correct option is B 0.25h
concerntration is halued.

$∴$ time must be $t_{1 / 2}$

$∴ t .025 n$

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