What is the effect of increasing [H_2O_2], on the rate of reaction in the experi

Question

What is the effect of increasing [H_2O_2], on the rate of reaction in the experiment? What is the effect of increasing the temperature on the rate of reaction in the experiment? Iodide ion is oxidized in acidic solution to triiodide ion (I_3^-) by hydrogen peroxide. H_2O_2(aq) + 3I^-(aq) + 2H^+(aq) rightarrow I_3^-(aq) + 2H_2O(l) The following data were obtained from 4 experiments that varied the initial reactant concentrations. Determine the rate law for the above reaction. Determine the rate constant of the reaction.

Explanation / Answer

To determine order of the reaction ratio of rates of reaction 2 and 1 is determined.

Rate reaction 2 / Rate reaction 1 = 2.30 x 10^ -6 / 1.15 x 10^-6 = 2

k = [0.020]x [ 0.010]x [0.0050]x / [0.010]x [0.010]x [0.0050]x = 10^-6 / 0.02= 10^-5

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