12th Class Chemistry Chemical Kinetics / रासायनिक बलगतिकी Question Bank 12th CBSE Chemistry Chemical Kinetics

  • question_answer
      Is it possible for a chemical reaction to have zero activation energy?    

    Answer:

                      No it is not possible. This is explained with the help of Arrhenius equation according to which \[k=A{{e}^{{{E}_{a}}/RT}}\]. If \[{{E}_{a}}\]is zero, then \[k=A{{e}^{0}}=A\]. This means that the rate constant is equal to collision frequency and every collision among the reacting species will lead to the products. Since this does not happen, it is not possible for a chemical reaction to have activation energy equal to zero.    


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