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COMEDK2019ChemistryChemical Kinetics

50 % of first order reaction is completed in 30 ~min . The velocity constant of the reaction is

Options

  1. A0.231
  2. B2.31
  3. C0.00231
  4. D0.0231

Correct answer

D. 0.0231

Step-by-step solution

As reaction is completed 50 % so , t_ 1 / 2 =30 ~min . For first order reaction k= 0.693 t_ 1 / 2 = 0.693 30 =0.023 imin ⁻¹

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