The decomposition of hydrogen 2 peroxide is catalyzed by iodide ion. The reaction mechanism is thought to be H,O2(aq) + l(aq) → H,0(I) + 10 (aq) 10(aq) + H,O2(aq) → H,0(I) + O2(g) + I'(aq) At 25°C, the first step is slow relative to the second step. What is the rate law predicted by the reaction mechanism? Is there a reaction intermediate?

The rate equation for the hydrolysis of sucrose to fructose and glucose C₁2H₂O(aq) + H₂O()→ CsH₁2Os(aq) + CH₂Os (aq) is-A[sucrose]/At=k[C₁₂H₂O₂). After 28 minutes at 27 °C, the sucrose concentration decreased from 0.0112 M to 0.0090 M. Find the rate constant k. k= min-1 Submit Answer Try Another Version 4 item attempts remaining

The following data were obtained for the reaction of carbon monoxide with chlorine, producing phosgene, COCl2, a highly toxic gas CO(g) + Cl2(g) → COCl2(g) From the following data, obtained at 360 K, determine: a) The order of the reaction, and the reaction rate law b) The value of the reaction rate constant, k c) The initial reaction rate for the formation of COCl2 when the concentration of CO is 0.30 M and that of Cl2 is 0.40 M The following data were obtained for the reaction of carbon monoxide with chlorine, producing phosgene, COCl2, a highly toxic gas CO(g) + Cl2(g) → COCl2(g) From the following data, obtained at 360 K, determine: a) The order of the reaction, and the reaction rate law b) The value of the reaction rate constant, k c) The initial reaction rate for the formation of COCl2 when the concentration of CO is 0.30 M and that of Cl2 is 0.40 M The following data were obtained for the reaction of carbon monoxide with chlorine, producing phosgene, COCl2, a highly toxic…

a)A nickel catalyst is commonly used in the hydrogenation of ethylene. If the initial concentration of ethylene is 2.75 mol·L−1 and the rate constant for the reaction is 0.0018 mol·L−1·s−1, what is the rate of reaction if it follows a zero-order reaction mechanism? Express your answer to two significant figures. b)Determine the half-life for the reaction in Part B. Express your answer to two significant figures.

Consider the following reaction: 4 HBr(g) + O2(g)  2 H2O(g) + 2 Br2(g)(a) The rate law for this reaction is first order in HBr(g) and first order in O2(g). What is the rate law for this reaction?(b) If the rate constant for this reaction at a certain temperature is 8.80e+03, what is the reaction rate when [HBr(g)] = 0.00429 M and [O2(g)] = 0.00758 M?Rate =  _______ M/s.(c) What is the reaction rate when the concentration of HBr(g) is doubled, to 0.00858 M while the concentration of O2(g) is 0.00758 M?Rate = _______ M/s

Chlorine monoxide (ClO) accumulates in the stratosphere above Antarctica each winter and plays a key role in the formation of the ozone hole above the South Pole each spring. Eventually, ClO decomposes according to the equation: 2C1O (g) → Cl2 (g) + O2 (g) The kinetics of this reaction were studied in a laboratory experiment at 298K, and the data are shown in the table below. (a) Determine the order of the reaction (b) Determine the rate law expression (c) Determine the value of the rate constant, k, at 298K. Time (ms) [CiO] (M) In [ClO] cioj (M-1) [CiO] 6.67 × 107 1.39 x 108 -8- 1.50 x 10 7.19 x 10 4.74 × 10 -18.0 6- 10 -18.8 6- 20 -19.2 2.11 x 108 6- 30 3.52 х 10° -19.5 2.84 x 108 6- 40 2.81 x 10 -19.7 3.56 x 108 6- 100 1.27 x 10 -20.5 7.87 x 108 10 200 6.60 x 10- -21.1 1.52 x 10°

A possible reaction for the degradation of the pesticide DDT to a less harmful compound was simulated in the laboratory. The reaction was found to be first order, with k = 2.47 x 10-8 s-1 at 25°C. What is the half-life for the degradation of DDT in this experiment, in years? (1 year = 365 days)

Consider these three reactions as the elementary steps in the mechanism for a chemical reaction.(i) Cl2 (g) + Pt (s) à 2Cl (g) + Pt (s) Ea = 1550 kJ ∆H = – 950 kJ(ii) Cl (g)+ CO (g) + Pt (s) à ClCO (g) + Pt (s) Ea = 2240 kJ ∆H = 575 kJ(iii) Cl (g) + ClCO (g) à Cl2CO (g) Ea = 2350 kJ ∆H = – 825 kJ e. Which reaction intermediate would be considered a catalyst (if any) and why?f. If you were to add 2700kJ of activation energy to the reaction, would you be able to make thereaction reverse itself (i.e. have the products become reactants)? Justify your answer.g. If you were to added a positive catalyst to step (iii) what would the end result be? Justify yourprediction.h. Your friend is looking at your graph and states that she believes that step (ii) is the ratedetermining step. Do you agree with her? Justify your reasoning.

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The following reaction was studied at 25°C. The following results were obtained. a) What is the rate law for this reaction at this temperature? b) What is the value of the rate constant? Be sure to include the correct units in your answer.