In collision theory of chemical reaction, `Z_(AB)` represents

Options

A. The collision frequency of reactants, A and B
B. Steric factor
C. The fraction of molecules with energies equal to `E_(a)`
D. The fraction of molecules with energies greater than `E_(a)`

Answer

A

Explanation

Rate of reaction according to collision theory can be expressed as
Rate `= Z_(AB) e^(- "Ex"//"RT")`
Where, `Z_(AB)` represents the collision frequency of the first `A & B and e^("Ex"//"RT")` represents the fraction of molecules energies equal to or greater than `E_a`
The number of collision per second per unit valuable to reaction mixture (A and B) is known as collision frequency `Z_("AB")`.