BASIC PRINCIPLES
Hint
A unimolecular reaction is one which involves one molecule (or atom) in the elementary step.
The reaction N2O5 → NO2 + NO3 is an example of a unimolecular reaction, since it involves the decomposition of a single molecule of N2O5.
A bimolecular reaction is one which involves two molecules (or atoms) in the elementary step, and a termolecular reaction is one which involves three molecules (or atoms) in the elementary step.
Review Question
The reaction 2NO + O2 → 2NO2 is an example of a
Unimolecular Reaction