Calculate the activation energy and the pre-exponential factor from the following data Temperature (K) Rate Constant (sec-1) 273 7.78 x 10-7 298 3.46 x 10-5 318 4.98 x 10¬4 328 1.50 x 10-3 338 4.87 x 10-3
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- Q.2) If the rate Constant of a reaction, K. equals 4,00*lo" -4 at 250 and 5,00 x16 at 4oc, then the activation energy of the reaction is equation AnswerQuestion 5 of 22 What is the activation energy for the isomerization of methyl isocyanide? Rate Constant Temperature 4.30 x 10-3 min-1 472K 5.54 x 10-2 min-1 503 K ]LEARNING ACTIVITY 4 The reaction 2 CIO2(aq) + 2 OH(aq) - CIO: (aq) +CIO, (aq) + H2O(1) was studied with the following results: Experiment Initial Rate (M/s) [CIO,) (M) 0.060 0.020 [OH'] (M) 0.030 0.030 0.0248 0.00276 2 3 0.020 0.090 0.00828 Calculate the rate when [CIO2] = 0.100 M and [OH] = 0.050 M.
- Problem Statement Complete chemical reaction kinetics problems as follows: 1a. Specify the reaction order for the following rate expressions: 1). rA = k(CA) 2 2) rA = k 3) rA = −kCA b. A laboratory kinetic study was performed for decomposition or decay of Chemical A, and the following data were obtained : Time, t Concentration, CAt (hr) (mg/l) 0 135 1 98 2 71 4 37 6 19 8 10 Use a spreadsheet to complete the necessary calculations and to perform a linear regression for establishing a statistically objective value for the reaction rate constant. Then use the spreadsheet's graphing tools to plot the observed data and the "best fit" regression line on the same graph to provide a graphical goodness-of-fit…レ Question 27 of 28 What is the activation energy of a reaction if it has the following rate constants? kJ/mol Rate Temperature Constant 1 6.20 x 10 4 s1 700 K 2.39 x 10-2 s-1 760 K 4 6. 7 8 9. +/- 2 Type here to search 53°F Cloudy へ 図0ハ会 DELL B F1 F Esc F3 F4 F5 F6 F7 F8 F9 10 F11 F12 PrtScr Insert 2. LOalfa +O M 1.1 K/s & “l| 55 1 2:11 PM О 10 Which of the following units correspond (s) to the rate constant k of a second order reaction? (check all that apply) k (M-1 min-1) k (M-1 s-1) k (M-2 min-1) k (M-2) k (M-2 s-1)
- The reaction mechanism shown below includes which of the catalytic mechanism types (Choose all that apply) Mg?+ PO?- Mg2+ PO? O H он Mg2+ -Ċ-H Mg2 -C-H H ÓH OH нон H-N-H "HO H-N-H H. Lys345 Lys345 Glu211 O transition state stabilization binding catalysis O metal ion catalysis O covalent catalysis O acid catalysis electrostatic catalysis O proximity binding catalysis O base catalysis O electron sink displacement catalysisII. Problem Soloing 1 for the reaction 20(9) -> (9) the Following were obtained at a censfant temperature Inifial Rate (mol|L min) Experi mend Initial [A] (mol L) initial (B] (mol|L) 5.00 0.100 0.100 0. 100 45.00 10-0 2 0.500 3 0. 100 0.200 D. 200 90.0 0.300 a) what is the order with respect to B ? b) what is the Drder with respect to A? c) write the rate law d.) calculate k wing the data prom experiment 2.A + 3B + 2C --> D + 2E Determine the rate law and rate constant using the experimental data below [A] (M) [B] (M) [C] (M) Rate (M/sec) Exp. 1 0.100 5.00 x 10-4 1.00 x 10-2 0.137 Exp. 2 0.100 1.00 x 10-3 1.00 x 10-2 0.268 Exp. 3 0.200 1.00 x 10-3 1.00 x 10-2 0.542 Exp. 4 0.400 1.00 x 10-3 2.00 x 10-2 1.084
- A reaction profile (not to scale!) for the reaction C₂H5OH + Br¯ → C₂H5Br + OH- is shown below: E (kJ) C2H5OH + Br" 161 C2H5Br + OH" Reaction Coordinate Which of the following are true? (Select all that apply.) If the energy of the activated complex were decreased, AE would decrease. The energy of the products is higher than the energy of the reactants. O AE is negative. The magnitude of Ea for the reverse reaction is smaller than 161 kJ. 71Ulate Ea irom k versus T data The rate constant k for a certain reaction is measured at two different temperatures: temperature k 198.0 °C 4.5x 1010 2.0x 1010 139.0 °C Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy E for this reaction. Round your answer to 2 significant digits. kJ E = mol Explanation Check 2021 McC M BExperiment Temperature (K) [A], (M) Initial Rate (M/s) 1 298 1.00x10-3 7.76x10-9 2 323 1.00x10-3 1.17x10-7 347 1.00x10-3 1.10x10-6 4 369 1.00x10-3 6.61×10-6 The plot of the natural log of the rate constant vs. the reciprocal of the absolute temperature is which of the following? Linear Arrhenius Plot Linear Arrhenius Plot 400 0.008 300 0.006 y = 8183x + 318.231 200 0.004 y = 8.62E-5x - 0.0268 100 0.002 0.000 0.000 0.005 0.010 100 200 300 400 1/T 1/T Linear Arrhenius Plot 0.004 Linear Arrhenius Plot 0.000 -2.000 0.003 -4.000 y = -9.57E-5x + 0.00223 0.002 -6.000 -8.000 y = -10450x +23.301 0.001 F-10.000 -12.000 0.000 -14.000 -15.000 -10.000 -5.000 0.000 0.000 0.002 0.004 1/T 1/T Using the correct plot, determine the activation energy (in kJ/mol) and frequency factor (with appropriate units) for the reaction. activation energy, Ea 4.0 kJ/mol frequency factor, A 4.0 s-1 In k In k Ink In k