2. Czarnowski and H.J. Schuhmacher (Chem. Phys. Lett. 17, 235 (1972)) suggested the following mechanism for the thermal decomposition of F2O in the reaction 2 F20(g) → 2 F2(g) + O2(g): 1) F2O + F2O →F+ OF + F2O : ka kb ke ka 2) F+F2O → F2 + OF: 3) OF + OF → 02 + F + F: 4) F+F+ F20 → F2 + F2O:

2. Czarnowski and H.J. Schuhmacher (Chem. Phys. Lett. 17, 235 (1972)) suggested the following mechanism for the thermal decomposition of F2O in the reaction 2 F20(g) → 2 F2(g) + O2(g): 1) F2O + F2O →F+ OF + F2O : ka kb ke ka 2) F+F2O → F2 + OF: 3) OF + OF → 02 + F + F: 4) F+F+ F20 → F2 + F2O:

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter30: Kinetic Methods Of Analysis

Section: Chapter Questions

Problem 30.9QAP

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The rate of photodecomposition of the herbicide piclo- ram in aqueous systems was determined by exposure to sunlight for a number of days. One such experiment produced the following results. (Data from R.T. Hedlun and C.R. Youngson, “The Rates of Photodecomposition of Picloram in Aqueous Systems," Fate of Organic Pesticides in tbe Aquatic Environment, Advances in Chemistry Series, #111, American Chemical Society (1972), 159—172.) Exposure Time, t (days) [Pidoram] (mol L_1) 0 4.14 X 10-6 7 3.70 X 10-6 14 3.31 X 10-6 21 2.94 X 10~6 28 2.61 X 10~6 35 2.30 X 10-6 42 2.05 X 10-6 49 1.82 X 10"6 56 1.65 X 10-6 Determine the order of reaction, the rate constant, and the half-life for the photodecomposition of picloram.
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P17D.4 The second- order rate constants for the reaction of oxygen atoms with aromatic hydrocarbons have been measured (R. Atkinson and J.N. Pitts, J. Phys. Chem. 79, 295 (1975)). In the reaction with benzene the rate constants are 1.44 x 10 dm3 mol s at 300.3 K, 3.03 x 10 dm mol s at 341.2 K, and 6.9 x 10 dm3 mols at 392.2K. Find the frequency factor and activation energy of the reaction.
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(a) Most commercial heterogeneous catalysts are extremelyfinely divided solid materials. Why is particle sizeimportant? (b) What role does adsorption play in the actionof a heterogeneous catalyst?
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write the mechanism 2.3 NaOH, H₂O & Heat
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The second-order rate constants for the reaction of oxygen atoms ·with aromatic hydrocarbons have been measured (R. Atkinson and J.N . Pitts, J. Phys. Chem. 79, 295 (1975)). In the reaction with benzene the rate constants are 1.44x 107dm' mor ' s ' at 300.3 K, 3.03 x 107 dm' mol"'s"' at 34 1.2K, and 6.9 x 107 dm' mor's ' at 392.2K. Find the frequency factor and activation energy of the reaction.
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