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Posted: Mon Mar 05, 2018 2:11 pm
Can someone clarify what exactly molecularity is.
Posted: Mon Mar 05, 2018 2:13 pm
Molecularity refers to the number of molecules involved in an elementary step. For example, for 2 molecules colliding to form product, the step is considered bimolecular.
Posted: Mon Mar 05, 2018 2:14 pm
Molecularity is the number of atoms/ molecules that are interacting as reactants. For example, a reaction 2A --> B is bimolecular because 2 atoms/molecules of A must react to form B. Similarly, A + 2B --> C is trimolecular because one molecule of A and two molecules of B are reacting to form your product.
Posted: Mon Mar 05, 2018 2:43 pm
Molecularity affects the order of the reaction as well- bimolecular reactions are second order, unimolecular is first order, etc.