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Reaction Mechanism
15. Chemical Kinetics / Reaction Mechanism / Problem 3

The reaction H2(g) + I2(g) → 2 HI(g) was thought to occur via a two-step mechanism:

Step 1: I2(g) ⇌ 2 I(g) (fast equilibrium)
Step 2: 2 I(g) + H2(g) → 2 HI(g) (slow)

Determine the rate law for the reaction.

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