Problem: What is the difference between a unimolecular  and a  bimolecular elementary reaction?

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We’re being asked to differentiate a unimolecular and a bimolecular elementary reaction.


Recall that an elementary step represents an actual interaction between the reactant molecules in a step. We characterize elementary steps by their molecularity.


The molecularity of a reaction is the number of reactant particles involved in the step. Here is a table showing the summary of common elementary steps.


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What is the difference between a unimolecular  and a  bimolecular elementary reaction?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Reaction Mechanism concept. If you need more Reaction Mechanism practice, you can also practice Reaction Mechanism practice problems.