Each step represents an elementary reaction. Step1. A + 2B ↔ C (fast equilibrium, k1 and k-1) Step2. C + D → E (slow, k2)  *c. Find the rate-determining step (RDS) and express the rate law. d. Use the Pre-Equilibrium Approximation to obtain the rate law. *e. Use the Steady-Sate Approximation to obtain the rate law.

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