1.

A reaction takes place in various steps. The rate constatn for first, second, third and fifthsteps are k_(1),k_(2),k_(3) and k_(5) respectively The overall rate constant is given by k=(k_(2))/(k_(3))(k_(1)/(k_(5)))^(1//2) If activation energy are 40, 60, 50, and 10 kJ/mol respectively, the overall energy of activation (kJ/mol) is :

Answer»

10
20
25
none of these

Answer :C


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