(Solution) - Consider the reaction of peroxydisulfate ion S2O8 2 with iodide ion -(2025 Original AI-Free Solution)

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Consider the reaction of peroxydisulfate ion (S2O8-2) with iodide ion (I?) in aqueous solution:
S2O82- (aq) + 3 I? (aq) -? 2 SO42- (aq) + I3?(aq)
At a particular temperature the initial rate of disappearance S2O82- of varies with reactant concentrations in the following manner:

(a) Determine the rate law for the reaction and state the units of the rate constant.
(b) What is the average value of the rate constant for the disappearance of S2O82- based on the four sets of data?
(c) How is the rate of disappearance of S2O82- related to the rate of disappearance of I??
(d) What is the rate of disappearance of I? when [S2O82-] = 0.025 M and [I-] = 0.050 M?