Answer:
R=k[A]^2
Explanation:
Steps mention in question are as follow.
Step 1: 2A <----> B ( fast)
Step 2: B + C ----> D (slow)
Overall: 2A + C ----> D
The slowest step is as follows
2A <----> B
Since the rate law is written as concentrations of reactants raised to power their stoichiometric coefficient multiplied by rate constant. Thus, rate law for this reaction can be written as follow.
