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Karnataka Board PUCPUC Science 2nd PUC Class 12

Why can’t molecularity of any reaction be equal to zero?

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Question

Why can’t molecularity of any reaction be equal to zero?

Short/Brief Note
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Solution

The number of molecules of the reactants involved in an elementary reaction is referred to as the molecularity of the reaction. For this, a single molecule with a minimum molecularity of one is required, and it cannot be zero.

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Chapter 4: Chemical Kinetics - Exercises [Page 56]

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NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 4 Chemical Kinetics
Exercises | Q III. 50. | Page 56

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Assertion (A): Order of reaction is applicable to elementary as well as complex reactions.

Reason (R): For a complex reaction, molecularity has no meaning.


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