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Questions on a pre lab for Kinetics: the Iodine Clock Reaction
2. How could one determine that the Cu on in the catalyst is the active species, rather than the 2+ nitrate ion? Give a specific example of a reagent you might use in another reaction trial in order to verify that the Cu2 is the active species.
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2. The determination of Cu2+ can be done by using Na+ instead of it. As Cu is in +2 oxidation state, but Na is in +1 oxidation state. Do the reaction in the same way, and the results would be different.

So, the reagent which can be used in another run can be NaNO3, NaCl, etc.

3. In the equation, the ratio of moles of S2O82- and S2O32-, are used. So, in the titration, if concentration of S2O82- is increased, then [S2O32-] will also increase correspondingly. Thus the ratio will remain the same and the value of \Delta[S2O82-] will become constant.

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