Methane, CH4, is a potent green house gas.The only significant sink for methane is itsreaction with the OH radical:СН4 + ОН > CНз + H20The rate constant for this reaction, k =1.85•10-20. T2.82. e-987 K/T cm:molecule-s1. Assume a constant OHSconcentration of 1.02•100 molecule/cm3.Calculate the half life of methane (in years)at a temperature of 10.9 °C

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Answered: Methane, CH4, is a potent green house…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter12: Chemical Kinetics

Section: Chapter Questions

Problem 79E: One mechanism for the destruction of ozone in the upper atmosphere is a. Which species is a...

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List at least four experimentally determined parameters that you, an experimenter, can define when exploring the hydrolysis of ethyl benzoate by aqueous sodium hydroxide.
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Can a reaction mechanism ever be proven correct? Can it be proven incorrect?
The following experimental data were obtained for the reaction of \'I14* and NOf in acidic solution. NH/(aq) + NO2-(aq) — N;(g) + 2 H,O(f) INH/I (mol L1) [NO21 (mol L-1, Rate = A[NJ/At (mol L-1 s’) 0.0092 0.098 3.33 X IO"7 0.0092 0.049 1.66 X 10‘7 0.0488 0.196 3.51 X 10"6 0.0249 0.196 1.80 X 10-6 Determine the rate law for this reaction and calculate the rate constant.
One mechanism for the destruction of ozone in the upper atmosphere is a. Which species is a catalyst? b. Which species is an intermediate? c. Ea for the uncatalyzed reaction O3(g)+O(g)2O2(g) is 14.0 kJ. Ea. for the same reaction when catalyzed is 11.9 kJ. What is the ratio of the rate constant for the catalyzed reaction to that for the uncatalyzed reaction at 25C? Assume that the frequency factor A is the same for each reaction.
7-17 If a certain reaction takes 16 h to go to completion at 10°C, what temperature should we run it if we want it to go to completion in 1 h?
The reaction NO(g) + O,(g) — NO,(g) + 0(g) plays a role in the formation of nitrogen dioxide in automobile engines. Suppose that a series of experiments measured the rate of this reaction at 500 K and produced the following data; [NO] (mol L ’) [OJ (mol L 1) Rate = -A[NO]/Af (mol L_1 s-1) 0.002 0.005 8.0 X 10"'7 0.002 0.010 1.6 X 10-'6 0.006 0.005 2.4 X IO-'6 Derive a rate law for the reaction and determine the value of the rate constant.
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3A. The gas-phase decomposition of acetic acid at 1189 K proceeds by way of two parallel reactions: (1) CH3COOH ® CH4 + CO2k1=3.74 s-1 (2) CH3COOH ® H2C=C=O + H2Ok2=4.65 s-1 Compute the percent yield of ketene (H2C=C=O) at this temperature.
The reaction below is a decomposition reaction of HI. 2HI → H₂ + 1₂ In this reaction, the following data were generated. T (°C) 508 427 393 K (cm3/mol.s) 1.059x10-¹ 3.1x10-³ 5.88x10-4 Find the complete rate equation for this reaction [i.e. r = ƒ(T)ƒ(C)]. 356 8.09x10-5 283 9.42x10-7
Analyze the following reaction mechanism. What is true for the second step in this mechanism? Acetone (CH3COCH3) Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a AH 0 (endothermic) AH 0 (exothermic)

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Methane, CH4, is a potent green house gas. The only significant sink for methane is its reaction with the OH radical: CH4 + OH → CH3 + H20