Question

What is the rate of reaction for a bimolecular elementary reaction?

(a) ZAB e^-Ea/RT

(b) ZAB e^Ea/RT

(c) – ZAB e^-Ea/RT

(d) – ZAB e^Ea/RT

The question was posed to me in final exam.

My question is from Collision Theory of Chemical Reactions in division Chemical Kinetics of Chemistry – Class 12

Answer 1

Correct answer is (a) ZAB e^-Ea/RT

To elaborate: The rate of reaction is equal to the product of collision frequency of reactants and the fraction of molecules whose energies are equal to or greater than that of the energy of activation. Where ZAB represents collision frequency of reactants, A and B and e^-Ea/RT represents a fraction of molecules with energies equal to or greater than E.