A certain endothermic reaction: `Ararr` Product, `DeltaH=+ve` proceeds in a sequence of three
Channel: Doubtnut
Date: 23/08/2020

A certain endothermic reaction: `Ararr` Product, `DeltaH=+ve` proceeds in a sequence of three elementary steps with the rate constants `K_(1), K_(2)` and `K_(3)` and each one having energy of activation `E_(a), E_(2)` and `E_(3)` respectively at `25^(@)C`. The observed rate constant for the reaction is equal to `K_(3) sqrt(K_(1)/K_(2)). A_(1), A_(2)` and `A_(3)` are Arrhenius parameters respectively.   Presence of a catalyst decreases the energy of activation of each path by half the value of `E_(1)`. Assuming the order actors same, the observed energy of activation would be: