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JEE Main2005ChemistryChemical KineticsActual

t _ 1 / 4 can be taken as the time taken for the concentration of a reactant to drop to 3 4 of its initial value. If the rate constant for a first order reaction is K , the t _ 1 / 4 can be written as

Options

  1. A0.10 / K
  2. B0.29 / K
  3. C0.69 / K
  4. D0.75 / K

Correct answer

B. 0.29 / K

Step-by-step solution

t_ 1 / 4 = 2.303 K 1 1- 1 4 = 0.29 K

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