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MHT CET20242 May 2024Morning ShiftChemistryChemical KineticsActual

Calculate the time required for reactant to decrease the concentration from 100 % to 20 % , if rate constant of first order reaction is 0.02303 hours ⁻¹ .

Options

  1. A28 hour
  2. B42 hour
  3. C56 hour
  4. D70 hour

Correct answer

D. 70 hour

Step-by-step solution

aligned & kt = [ A ₀ ] A & 0.02303 hour ⁻¹ t = 100 20 & t =69.88 hour 70 hour aligned

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