For each trial, calculate the initial concentrations of hydrogen peroxide [H2O2]0 and iodide [I-]0 as well as log[H2O2]0 and log[I-]0.

Select two trials in which the [I-]0 is constant between trials. Analyze the difference in the [H2O2]0 and the rate of reaction to make a preliminary determination of the order of the reaction for [H2O2].

Select two trials in which the [H2O2]0 is constant between trials. Analyze the difference in the [I-]0 and the rate of reaction to make a preliminary determination of the order of the reaction for [I-].

Chemical net equation: 2 I- (aq) + H2O2 (aq) + 2H3O+ (aq) I2 (aq) + 4H2O (l)

Rate: 4.00 10^-6 M/s

Table 1. Composition of Reaction Mixtures Solution A Solution B Trial 0.020 M Na2S203 Starch Solution DI Water 0.30 M KI 0.10 M H2O2 1 3.0 mL 2 Buffer: Mixture of 0.5 M CH3CO2H & 0.5 M NaCH3CO2 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 3 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 6.0 mL 5.0 mL 4.0 mL 3.0 mL 2.0 mL 1.0 mL 1.0 mL 2.0 mL 3.0 mL 4.0 mL 5.0 mL 6.0 mL 4 3.0 mL 3.0 mL 3.0 mL 3.0 mL 3.0 mL 5 6 7 8 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 9 10 11 12 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 7.0 mL 5.5 mL 4.0 mL 3.0 mL 1.5 mL 2.0 mL 2.0 mL 2.0 mL 2.0 mL 2.0 mL 2.0 mL 1.0 mL 1.0 mL 2.5 mL 4.0 mL 5.0 mL 6.5 mL 8.0 mL none 0 1.0 mL none 7.0 mL 3.0 mL Table 1. Composition of Reaction Mixtures Solution A Solution B Trial 0.020 M Na2S203 Starch Solution DI Water 0.30 M KI 0.10 M H2O2 1 3.0 mL 2 Buffer: Mixture of 0.5 M CH3CO2H & 0.5 M NaCH3CO2 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 3 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 6.0 mL 5.0 mL 4.0 mL 3.0 mL 2.0 mL 1.0 mL 1.0 mL 2.0 mL 3.0 mL 4.0 mL 5.0 mL 6.0 mL 4 3.0 mL 3.0 mL 3.0 mL 3.0 mL 3.0 mL 5 6 7 8 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 5 drops 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 9 10 11 12 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 7.0 mL 5.5 mL 4.0 mL 3.0 mL 1.5 mL 2.0 mL 2.0 mL 2.0 mL 2.0 mL 2.0 mL 2.0 mL 1.0 mL 1.0 mL 2.5 mL 4.0 mL 5.0 mL 6.5 mL 8.0 mL none 0 1.0 mL none 7.0 mL 3.0 mL