Chemistry-
General
Easy

Question

The equilibrium constant of a reaction is 20.0. At equilibrium, the rate constant of forward reaction is 10.0. The rate constant for backward reaction is :

  1. 0.5  
  2. 2.0  
  3. 10.0  
  4. 200.0  

The correct answer is: 0.5


    K subscript c end subscript equals fraction numerator k subscript f end subscript over denominator k subscript b end subscript end fraction
    20 equals fraction numerator 10 over denominator K subscript b end subscript end fraction
    k subscript b end subscript equals fraction numerator 1 over denominator 2 end fraction equals 0.5

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