When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is [2015]

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Solution

Q.
When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is [2015]

1 second

2 more than zero but less than first

3 zero

4 first

Ans.
(4)

Half-life period of a first order reaction is independent of initial concentration,

$t_{1 / 2} = \frac{0.693}{k}$

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