BMB428Dr. Song TanPhysical Chemistry with Biological ApplicationsFall 20071Problem Set 22: Reaction MechanismsDue Nov 27, 20071.What is the difference between a chemical mechanism (reaction mechanism) and a kineticmechanism? What is an elementary step?2.Is it possible to have more than one chemical mechanism which is consistent with an observed kineticmechanism? If you are told that a reaction goes via a particular chemical mechanism, can you derivemore than one kinetic mechanism which is consistent with this mechanism?3.If it is possible to have more than one chemical mechanism which is consistent with an observedkinetic mechanism, draw a free energy profile (with G on the y coordinate and reaction progress onthe x coordinate) illustrating why this is possible.4.The kinetics of the reactionI-+ OCl-<—> OI-+ Cl-have been studied in a basic solution. The initial rate of I-disappearance ( d[I-]/dt ) has beenmeasured for several different starting concentrations of substrates:Initial Conc of I- (M)
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Biological Applications, chemical mechanism, Dr. Song Tan, kinetic mechanism