If K is rate constant and A is collision frequency factor then value of `(Ea_(2) -Ea_(1))` where `Ea_(1)` & `Ea_(2)` are activation energy of first and second reaction respectively (in kcal/mole) at `227^(@)C` , is :-
Given : `K_(1)=100K_(2)` , `10A_(1)=A_(2)` , In 10 = 7/3

The rate constant of a reaction at 300 K is 1.6 xx 10^(-3) sec^(-1) and at 310K it is 3.2 xx 10^(-3) sec^(-1) the activation energy of the reaction approximately in kcals is

Dimerisation of NO_2 , is an exothermic reaction. If enthalpy of reaction is /_\H , then the minimum value of activation energy for forward reaction (E_a) will be

For a reaction, if effective rate constant k' is given b k=(2k_2)/k_3(k_1/k_5)^(1//5) where k_1,k_2,k_3,k_5 are rate constants for different steps of the reaction The effective frequency factor

For a reaction, if effective rate constant k' is given b k=(2k_2)/k_3(k_1/k_5)^(1//5) where k_1,k_2,k_3,k_5 are rate constants for different steps of the reaction The effective activation energy is

Rate constant k of a reaction is dependent on temperatur: k=Ae^(Ea//RT) K has the least value at

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. The observed energy of activation for the reaction is:

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. Which represents the correct value, if catalyst is not present?

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. The observed Arrhenius parameter for the reaction is: