The Decomposition of Hydrogen Peroxide DATA ANALYSIS Part Initial rate [H2O2] (mol/L-s) Rate constant after mixing after mixing
Calculate the rate constant for the decomposition of hydrogen peroxide; k, and write the rate law expression for the catalyzed decomposition of hydrogen peroxide. Explain how you determined the order of the reaction.
The following mechanism has been proposed for this reaction:
HO2 + I- → H2O + OI-
5HO2 + OI- → 3H2O + IO3-
If this mechanism is correct, which step must be the rate-determining step? Explain.
Use the Arrhenius equation (shown below) to determine the activation energy, Ea, for this reaction:
ln(k) = -Ea/RT + ln(A)