Question

The number of molecules that react with each other in an elementary reaction is a measure of the ______.

Options

• activation energy of the reaction

• stoichiometry of the reaction

• molecularity of the reaction

• order of the reaction

Answer 1

The number of molecules that react with each other in an elementary reaction is a measure of the molecularity of the reaction.

Explanation:

Molecularity refers to the count of reactant species that collide simultaneously during an elementary or simplest reaction step.