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NTA Abhyas NEET2020ChemistryChemical KineticsPractice

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

Options

  1. AFirst
  2. BSecond
  3. CMore than zero but less than first
  4. DZero

Correct answer

A. First

Step-by-step solution

It is first order reaction in which half-life is independent of initial concentration. t 1 / 2 ∝ 1 a n - 1 n = order of reaction t 1 / 2 = 0.693 k (for first order t 1 / 2 is independent of concentration)

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