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NEST2022ChemistryChemical Kinetics

For a chemical reaction, the time taken ( ) for the initial rate of reaction to fall to 90 % of its value is found to be independent of the initial concentration. Choose the correct statement for this reaction.

Options

  1. AThe fraction reacted at time t equals [-k t] , where k is the rate constant.
  2. BThe half life for the reaction is 5 .
  3. CThe time taken to complete 75 % of the reaction is two times the half life of the reaction.
  4. DThe pre-exponential factor in the Arrhenius equation for this reaction has the dimension of time.

Correct answer

C. The time taken to complete 75 % of the reaction is two times the half life of the reaction.

Step-by-step solution

No solution available.

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