Chemistry Practice Problems Reaction Mechanism Practice Problems Solution: A proposed mechanism for the formation of hydrogen...

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Solution: A proposed mechanism for the formation of hydrogen iodide can be written in simplified form asI2 → 2I          Fast, k1 (forward), k–1 (reverse)I + H2 ⇌ H2I          Fast, k2 (forward), k–2 (reverse)H2I + I →{uildrelover longrightarrow }atop {uildrel { k_5} over ;}  2 HI          Slow, k3What rate law corresponds to this mechanism?

Problem

A proposed mechanism for the formation of hydrogen iodide can be written in simplified form as
I2 → 2I          Fast, k1 (forward), k–1 (reverse)
I + H2H2I          Fast, k2 (forward), k–2 (reverse)
H2+ I   2 HI          Slow, k3

What rate law corresponds to this mechanism?