The reaction of peroxydisulfate ion (S2O8)2- with iodide ion (I-)is, S2O82-(aq) + 3I-(aq)= 2SO42-(aq) + I3-(aq)
From the following data collected at a certain temperature, determine the rate law and calculate the rate constant.
Experiment (S2O8)2- (M) I-(M) Initial rate (M/s)
1 0.080 0.034 2.2*10^-4
2 0.080 0.017 1.1*10^-4
3 0.16 0.017 2.2*10^-4