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JEE Main2009ChemistryChemical KineticsActual

The half life period of a first order chemical reaction is 6.93 minutes. The time required for the completion of 99 % of the chemical reaction will be ( 2=0.301) :

Options

  1. A230.3 minutes
  2. B23.03 minutes
  3. C46.06 minutes
  4. D460.6 minutes

Correct answer

C. 46.06 minutes

Step-by-step solution

aligned & = 0.6932 t_ 1 / 2 = 0.6932 6.93 ⁻¹ & Also t= 2.303 [A_ ] [A] & [A_ ]= initial concentration (amount) & [A]= final concentration (amount) & t= 2.303 6.93 0.6932 100 1 & =46.06 minutes aligned

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