Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid...
Help Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution H + H202H20' -ΟΗ (rapid equilibrium) H20 -OH + Br - HOBr + H20 (slow) HOBr + Η* - Βr - Βι2 + H20 (fast) What is the overall reaction equation for this process? 0005 Multiple Choice -Book Ο None of these choices are correct Ο H2O-OH + B H Br2 + H20 Ο 2Η Η2Ο2 Β- MO H2OOH - B2 H2O...
Consider the three step reaction mechanism for the atmospheric oxidation in clouds of sulfurous acid to sulfuric acid by hydrogen peroxide H2SO3(9)+ H2O2(9)- H2SO4(9)+ H20(9) Step 1: H2SO3 = HSO3+H* fast Step 2: H202 + H+ = H302 fast Step 3: H302* + HSO3 + H2SO4+H20 slow Which of the following is correct concerning the rate law for the overall reaction? O A. The reaction is first order in each of H2O2 and H2SO3, but of order 0 in H...
5. Iodide is oxidized by hydrogen peroxide according to the following mechanism: H 2 O 2 + I- → H 2 O + OI- (slow) H+ + OI- → HOI (fast) HOI + H+ + I- → I2 + H2O (fast) (a) What is the overall reaction? (b) What is the molecularity of each step? (c) Write the rate equation for the rate-determining step. (d) What are the intermediates in this reaction? (If none, write “none.”)
The following mechanism, proposed for the decomposition of hydrogen peroxide is composed of 2 elementary steps: H2O2(aq) + I'(aq) > H2O(l) + 10 (aq) 10 (aq) + H2O2(aq) -> H2O(l) + O2(g) + I'(aq) The rate law predicted by the mechanism is slow fast a) rate = k [H2O2) b) rate =k [H202][I] c) rate =k [H2O2][10] d) rate = k [H202) [1]
The reaction between bromate ions and bromide ions in acidic aqueous solution is given by the equation BrO3- (aq) + 5 Br – (aq) + 6 H+ (aq) à 3 Br2 (l) + 3 H2O (l) The table below gives the results of four experiments. Using these data, determine the orders for all three reactants, the overall reaction order, and the value of the rate constant. What is the value of k? What are the units of k? Experiment...
#13 Interpreting Mechanisms 1. Consider the following mechanism: Step 1 Br2 2Br fast Step 2 Br + H2 H2Br fast Step 3 H2Br + Br 2HBr slow a. What is the overall equation? b. Identify the intermediate(s) if any. c. What is the molecularity and the rate law for each step including any reversible steps? d. What is the predicted rate law expression for this reaction. Be sure to only list reactants from the overall equation and...
Consider a different titration for this exercise. Potassium permanganate (KMn04) is the titrant and hydrogen peroxide (H202) the analyte according to the following balanced chemical equation. 2 MnO45 H202 + 6 H+ »2 Mn2+ 5 02 + 8 H20 (a) What is the stoichiometry of MnO4 to H202? 8:3 5:2 2:1 1:1 1:2 O2:5 3:8 (b) Complete the following table for this titration. Data Table P3: Titration of hydrogen peroxide with potassium permanganate concentration of MnOa 0.554 M volume H202...
The redox reaction between hydrogen peroxide, H2O2, and permanganate ions, MnO4-, in acid solution are as follows: 5H2O2(aq) + 2MnO4-(aq) + 6H+(aq) → 5O2(g) + 2Mn2+(aq) + 8H2O (l) 5 mol of MnO4-was required to reach the equilibrium. How many moles of H2O2were required to reach the equilibrium? a) 2 mol b. 10 mol c) 12.5 mol d) 25 mol
5. For the overall exothermic reaction: H2(g) + Br2(g) → 2HBr(g) the following mechanism was determined: fast Equilibrium Step 1: Brz(8) 2Br(g) Step 2: H2(g) + Br(g)_52HBr(g) + H(g) Step 3: H(g) + Br(g) k3 HBr(g) slow fast Use a plot of AH versus Reaction Pathway to illustrate the three step reaction profile.
4. Now consider the catalase catalyzed decomposition of hydrogen peroxide to water. The much needed catalyst. 2H202 + catalase → 2H2O + O2 + catalase a. [3] Assume the following mechanism: H2O2 + catalase = {H202-catalase} HIS 54 Inhibitor ASN 127 H2O2 + {H202-catalase} → catalase + 2H20 + O2 Oxygen When the pre-equilibrium approximation is used, the rate-law is: 41 dt Kegk2[H202]?[E]. The steady-state approximation gives a more general rate law. Derive the rate law using the SS approximation....