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MHT CET202124 Sep 2021Evening ShiftChemistryChemical KineticsActual

In a first order reaction 60 % of reactant decomposes in 4.606 . What is half life of reaction? ( k =0.1989 ~min ⁻¹ )

Options

  1. A3.48 min
  2. B2.4 min
  3. C3.0 min
  4. D1.74 min

Correct answer

A. 3.48 min

Step-by-step solution

For 1st order reaction, aligned & t _ 1 / 2 = 2 k = 0.693 0.1989 & t _ 1 / 2 =3.48 ~min aligned

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