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What is half life of a first order reaction if time required to decrease concentration of reactant from 0.4 M to 0.1 M is $x$ hour?

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For first-order reactions, each half-life reduces the concentration by exactly $50%$, regardless of the starting amount.

Updated On: Apr 30, 2026

$x$ hour
$2x$ hour
$\frac{x}{2}$ hour
$\frac{3x}{2}$ hour

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The Correct Option is C

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