A reaction A + B → C is proposed to proceed by mechanism: (i) A + A ⇌ A₂ fast; (ii) A₂ + B → 2C slow.
What is the predicted rate law?
- A
rate = k[A₂][B]
- Bcheck_circle
rate = k[A]²[B]
- C
rate = k[A][B]
- D
rate = k[A][B]²
Explanation
The slow step gives rate = k₂[A₂][B]. Substituting [A₂] = K[A]² gives rate = k₂K[A]²[B] = k[A]²[B].