APFIVE Reaction Mechanisms and Intermediates
All of the following statements about reaction mechanisms and the treatment of intermediates are true except:
A
Since intermediates cancel out in the overall reaction, they do not appear in the net rate expression.
B
The rate-determining step governs the overall rate law of a multi-step reaction.
C
Intermediates, being produced and consumed, are included in the final rate law even if they do not appear in the overall balanced equation.
D
When an intermediate appears in a slow step, it can often be substituted by an expression involving the initial reactants using a pre-equilibrium assumption.
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