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Why molecularity is applicable only for elementary reactions and order is applicable for elementary as well as complex reactions?
Answers (1)
A complex reaction involves many elementary reactions. Numbers of molecules in each elementary reaction can vary leading to different molecularity at each step. Therefore, the molecularity is not applicable in case of overall complex reaction. Whereas the slowest step is responsible for the experimental determination of the order of a complex and is therefore, applicable even in the case of complex reactions.
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