420. The oxidation reaction of a bromide ion with hydrogen peroxide in an aqueous medium is complex. It follows the stoichiometric equation 2Br– H2O2 2H =Br2 2H2O and the kinetic equation v = k[H2O2][Br–][H ]. 1) If at some point in time the rate of decrease in the concentration of Br– is equal to 7.2×10–3 mol/(dm3*s), what is the rate of decrease in the concentration of H2O2? 2) How many times will the rate of this reaction decrease if the reaction mixture is diluted with a solvent by 2 times?

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