alleryUnlike molecularity, the order of a reaction can be:
AA negative
BA constant
CA fraction
DA whole one
Answer & Solution
Correct answer: C. A fraction
1. Molecularity counts actual colliding species.
2. Order is fitted to measured rate data instead.
3. So order can be zero or even a fraction.
_Source: syllabus Chemistry Part I, Chapter 4, Chemical Kinetics._
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