Why is molecularity applicable only for elementary reactions whereas order is applicable for elementary as well as complex reactions?
Why is molecularity applicable only for elementary reactions whereas order is applicable for elementary as well as complex reactions?
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Solution and Explanation
Molecularity refers to the number of reacting species involved in an elementary reaction and is a property of that specific step. It applies only to elementary reactions because these reactions occur in a single step and involve a fixed number of reacting molecules. On the other hand, the order of a reaction is determined experimentally and refers to the relationship between the concentration of reactants and the rate of the overall reaction, which can apply to both elementary and complex reactions.
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Given:
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