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NEET 2018
Exam
NEET
Year
2018
Subject
Chemistry
Chapter
Chemical Kinetics

NEET 2018 · Chemistry · Chemical Kinetics

When initial concentration of the reactant is doubled, what happens...

When initial concentration of the reactant is doubled, what happens to the half-life period of a zero order reaction?

Options

  1. AIt is tripled.
  2. BIt is doubled.
  3. CIt is halved.
  4. DIt remains unchanged.

Correct answer

B. It is doubled.

Step-by-step solution

Order of reaction =0= 0

Half lifer

t12=[A0]2Kt12∝[A0]t\dfrac{1}{2} = \dfrac{\left[{A}_{0}\right]}{2K}t\dfrac{1}{2} ∝ \left[{A}_{0}\right]

∴∴ Initial concentration doubled then half-life i.e t12{\text{t}}_{\dfrac{1}{2}} becomes double

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