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Chemical Kinetics question

2015 · Q85
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Chemical Kinetics question

2015 · Q85

NEETChemistryChemical KineticsMCQ+4 / −1
When initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction is
  1. A
    second
  2. B
    more than zero but less than first
  3. C
    zero
  4. D
    first.
View written solutionFree

Correct answer: D

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

t12=0.693k{t_{{1 \over 2}}} = {{0.693} \over k}t21​​=k0.693​

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