Chemistry / Unit 9 Chem 1718 short lesson, about 20 seconds
An Elementary Step's Rate Law Follows From Its Molecularity
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The idea
Unlike a reaction's rate law, an elementary step's rate law is written from its equation, since coefficients count colliding particles.
In practice
The bimolecular step O3 + O → 2 O2 has rate law rate = k[O3][O], read straight from its coefficients.
Where people slip
This works only for a single elementary step — applying it to a multistep equation is the Chem 1641 error.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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