Rate laws for elementary steps come directly from the molecularity (stoichiometric coefficients).
What is the rate law for elementary step A + B -> D?
- A
rate = k[D]
- B
rate = k[A]+[B]
- C
rate = k[A]^2[B]
- Dcheck_circle
rate = k[A][B]
Explanation
For an elementary bimolecular step, rate = k × product of reactant concentrations.