. 4. For Questions 4 and 5, consider the following kinetic data for the decomposition of N2O4 into NO2.
Temperature (oC) |
Specific-rate constant, k (s-1) |
-5 |
2.5 x 103 |
25 |
3.5 x 104 |
What is the rate law for this reaction?
What is the numerical value of the activation energy (in kJ/mol) for this reaction?
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. 4. For Questions 4 and 5, consider the following kinetic data for the decomposition of...
Dinitrogen tetraoxide, N2O4, decomposes to nitrogen dioxide, NO2, in a first-order process. If k = 2.5 × 103 s–1 at –5°C and k = 4.7 × 103 s–1 at 25°C, what is the activation energy for the decomposition? Select one: A. > 1000 kJ/mol B. 580 kJ/mol C. 0.73 kJ/mol D. 58 kJ/mol E. 14 kJ/mol
Decomposition of nitrogen dioxide dimer N2O4 is described by the reaction: N2O4(g) = 2NO2(g) Concentration of N2O4 became 2 times less after 2,5⋅103 s. You have to calculate: a) the value of rate constant k of the reaction; b) the value of equilibrium constant Kp. You are given the value of standard Gibb’s energy of formation Goform: substance Goform, kJ/mol NO2(g) 51.6 N2O4(g) 98.4
The activation energy for the decomposition of N2O4 is 57.2. kJ/mol. If the rate constant for the reaction is 3.4 x 104s-1 at 25 ºC, what is the rate constant at 77 ºC?
The activation energy for a particular reaction is 102 kJ/mol. If the rate constant is 1.35 x 10-45-1 at 323 K, what is the rate constant at 273 K? | 1/ Determine the activation energy for the redox reaction Q2+ + 2 R3+ → Q4+ + 2 R2+. Rate Constant Temperature 3.12 x 103 M-15-1 275 K 2.70 x 104 M-15-1 300 K kJ/mol
6 The decomposition of ozone in the upper atmosphere is catalyzed by NO. The overall reaction and rate law are: rate k[O][NO] Os(g)+O(g)+20;(g); Write a possible mechanism that is consistent with rate law and identify an intermediate in the reaction. 7. A possible mechanism for the iodide ion catalyzed decomposition of hydrogen peroxide in aqueous solution is: -slow H2O:(aq) +I(aq)H;O(1) + 0I°(aq) -fast H20:(aq) +Or(aq)H:O()) +02(g)+l'(aq) What is: iv) the catalyst? iv) the intermediate ii) the rate law i) the...
Question #5 Here are the relevant data to determine the activation energy of the reaction. Rate constant (units not shown) Temperature (K) .13 293 0.11 308 Use the data above to determine the activation energy of the reaction? 83 kJ/mol Submit This value is not correct. Please check your calculations and try again. Question #6 Here are your data for trial of Lab 7 (the trial at room temperature without the catalyst): [103 initial (S203 initial Initial Rate .0023 M...
1A. The oxidation of nitrogen monoxide by oxygen at 25 oC 2 NO + O22 NO2 is second order in NO and first order in O2. Complete the rate law for this reaction in the box below. Use the form k[A]m[B]n... , where '1' is understood for m, n ... (don't enter 1) and concentrations taken to the zero power do not appear. Rate = In an experiment to determine the rate law, the rate constant was determined to be...
Rate constant for decomposition of hydrogen peroxide is 7.0 x10-5 s-1at 300.0K, with activation energy of 75 kJ/mol. At what temperature would the reaction rate be doubled?
Calculate the activation energy for the decomposition of hydrogen iodide (HI), if at 573K the rate constant is 2.91E-6 M/s; and at 773K the rate constant is 7.65E-2 M/s. Note: answer should be 187.38 kJ/mol Calculate the activation energy for the decomposition of hydrogen iodide (HI), if at 573 °K the rate constant is 2.91 x 106 M/s; and at 773 "K the rate constant is 7.65 x 102 M/s. a. -1.41 kJ/mol b. 187.38 kJ/mol c. 10.18 kJ/mol d....
6. (a) The rate constant for the first-order decomposition of N2Os in the reaction, 2 N2Os(g)-4 NO(g)+0.(g), k-3x10-s at 25°C. What is the half-life of N20s? What will be the pressure, initially 500 bar, at 10 min after initiation of the reaction? (b) Knowing the activation energy of the above reaction is 100 kJ mor', calculate the required reaction temperature at which the reaction rate is doubled. (c) What is the conversion efficiency of N20s at 1 bar and 25...