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AP EAMCET2015ChemistryChemical Kinetics

The time required for a first order reaction to complete 90 % is ' t '. What is the time required to complete 99 % of the same reaction?

Options

  1. A2t
  2. B3t
  3. Ct
  4. D4t

Correct answer

A. 2t

Step-by-step solution

For the first order reaction, t= 2303 k a a-x Now putting the values aligned & t_ 90 % =t= 2303 k ( 100 100-90 ) & t_ 99 % = 2303 k ( 100 100-99 ) & t t_ 99 % = 2303 k ( 100 10 ) 2303 k ( 100 1 ) = 1 2 & t_ 99 % =2 t aligned

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