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Question

In a first order reaction the concentration of reactant decrease from 800 mol/dm3 to 50 mo/dm3 in 2×104 sec. The rate constant of reaction in sec-1 is:


  1. 2×104

  2. 3.45×10-5

  3. 1.386×10-4

  4. 2×10-4


Solution

The correct option is C

1.386×10-4



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