Match the entries of column I with appropriate entries of column II and choose the correct option out of the four options given.
| Column I | Column II |
| (a) Collision frequency | (i) R = PZe-Ea/RT |
| (b) Fraction of molecules with energy ≥ Ea | (ii) P |
| (c) Probability of steric factor | (iii) e-Ea/RT |
| (d) Rate of reaction | (iv) Z |
Answer & explanation
Correct answer: option 2
The number of collisions per second per unit volume of the reaction mixture is called collision frequency (Z)
For a bimolecular reaction, A + B → products
Rate = PZABe-Ea/RT
where P = Probability of steric factor
ZAB = collision frequency of reactants A and B
e-Ea/RT = fraction of molecules with energy ≥ Ea