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# 3 write down a complete set of rate equations for the

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3. Write down a complete set of rate equations for the mechanism 4. What is the overall reaction? 5. The empirical rate law for this reaction is . What does this tell us about the elementary reactions? How is k related to the rate constants of the two steps? 4. Proflavin is a large aromatic ion used to stain DNA: Like many other planar aromatic species, proflavin dimerizes in water: where P is a proflavin ion and D is the dimer. The rate constants have been measured by a technique which we shall discuss later. They are Calculate the equilibrium constant for the dimerization reaction. 5. Suppose that the reaction has an empirical rate law v = ka when studied in water. Is it possible that the rate-determining step of the reaction involves water? How could you test this experimentally? 6. has a half-life of 28.1y. This radioisotope is particularly hazardous because it becomes incorporated in bones so that it remains in the body and is never excreted. If a person accidentally ingests of , how much will remain after 40y? 7. The reaction of ethyl acetate with hydroxide to form acetate ions and ethanol has a rate law

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with a rate constant of . If the initial concentrations
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