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Manipal MET2018ChemistryChemical Kinetics

99 % of a first order reaction was completed in 32 min . When will 99.9 % of the reaction complete?

Options

  1. A50 min
  2. B46 min
  3. C49 min
  4. D48 min

Correct answer

D. 48 min

Step-by-step solution

aligned & k= 2.303 32 a a-0.99 a =0.1439 ~min ⁻¹ & t= 2.303 0.1439 a a-0.999 a =48 ~min aligned

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