Question

The mechanism of a reaction consists of a pre-equilibrium step with forward and reverse activation energies of 27 kJ mol1 and 35 kJ nl011 , respectively, followed by a rate-limiting elementary step of activation energy 1 S kJ mol1 • What is the activation energy of the overall reaction

Answer 1

Step-by-step explanation:

The given data is as follows.

`E_(a)(a)` = 27 kJ/mol

`E_(a)(b)` = 35 kJ/mol

and,
`E_(a)(c)` = 15 kJ/mol

Activation energy of the overall reaction will be the sum of given activation energies as follows.

`E_(a) = E_(a)(a) + E_(a)(b) + E_(a)(c)`

= (27 + 35 + 15) kJ/mol

= 77 kJ/mol

Thus, we can conclude that the overall value of activation energy is 77 kJ/mol.