Consider the following Potential Energy Diagram for a four-step reaction mechanism.  (a)              What is the overall balanced equation for the reaction? (b)              Does this reaction have a catalyst? Explain how you know.   (c)          Which step in the above mechanism is the rate-determining step? (d)          Is this reaction exothermic or endothermic?   (e)      The rate law equation was determined to be rate = k [NO2] [F2].  Is the proposed mechanism           plausible?

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