Rate of a general reaction A + B `to` products can be expressed as follows on the basis of collision theory.
Rate `= Z_(AB) e^(-E_(a)//RT)`
Which of the following statements is not correct for the above expression?

Options

A. Z is collision frequency andis equal to number of collisions per second per unit volume of the reaction mixture
B. `e^(E_(a)//RT)` is the fraction of molecules with kinetic energy equal to or greater than `E_(a)`
C. `E_(a)` is activation energy of the reaction.
D. All the molecules which collide with one other are effective collisions.

Answer

D

Explanation

Only those collisions in which molecules collide with sufficient energy, called threshold energy and proper orientation are effective collisions. Rest of the molecules collide and bounce back.