AP Chemistry Quiz
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KINETICS
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A mechanism is proposed in which the first step is fast and reversible and is stated to reach a pre-equilibrium before the slow step. Step 1 (fast, reversible; pre-equilibrium): NH3+H+⇌NH4+\mathrm{NH_3 + H^+ \rightleftharpoons NH_4^+} Step 2 (slow): NH4++NO2−→N2+2H2O\mathrm{NH_4^+ + NO_2^- \rightarrow N_2 + 2H_2O} Which qualitative rate law is most consistent with this mechanism under pre-equilibrium conditions?
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