A certain endothermic reaction: Ato Product, DeltaH=+ve proceeds ina sequence of three elementary steps with the rate constant K_(1),K_(2) and K_(3) and each one having energy of activation E_(1),E_(2) and E_(3) respectively at 25^(@)C. The observed rate constannt for the reaction is equal to K_(3)sqrt((K_(1))/(K_(2))). A_(1),A_(2) and A_(3) are Arrhenius parameters respectively.Which represents the correct value if catalyst is not present:

A certain endothermic reaction: Ato Product, DeltaH=+ve proceeds ina s

1.	A certain endothermic reaction: Ato Product, DeltaH=+ve proceeds ina sequence of three elementary steps with the rate constant K_(1),K_(2) and K_(3) and each one having energy of activation E_(1),E_(2) and E_(3) respectively at 25^(@)C. The observed rate constannt for the reaction is equal to K_(3)sqrt((K_(1))/(K_(2))). A_(1),A_(2) and A_(3) are Arrhenius parameters respectively.Which represents the correct value if catalyst is not present:
Answer» `DeltaH` is definitely lower than`E_(1)` `DeltaH` is definitely lower than `E_(3)` `DeltaH` is definitely lower than `E_(1)-E_(2)` `DeltaH` is definitely lower than `(E_(1)-E_(2)+2E_(3))/2` Solution :`Aepsilon_(R)gtAepsilon_(R)(epsilon)gtDeltaH,((2epsilon_(3)+epsilon_(1)-epsilon_(2))/2)gtDeltaH` `DeltaH=(E_(P)-epsilon_(R))=+ve,DeltaH=(Aepsilon_(R)-Aepsilon_(P))=+ve, (A epsilon_(R)gtAepsilon_(P)` & `EPSILONR)ltepsilon_(P)`