Question

The number of molecules of the reactants taking part in a single step of the reaction tells about ______.

Options

• molecularity of the reaction

• mechanism of the reaction

• order of reaction

• all of the above

Answer 1

The number of molecules of the reactants taking part in a single step of the reaction tells about molecularity of the reaction.

Explanation:

Molecularity refers to the number of molecules or species that collide simultaneously in a single elementary step of a reaction. It can be unimolecular, bimolecular, or trimolecular. It is a theoretical concept and always a whole number.