Question D c) Two mechanisms, shown below, have been proposed for the differentdecomposition reactions.Mechanism A:Step 1: NO2(g) - NO(g) + 0(g)Step 2: NO2(g) + 0(g) - NO(g) + 02(g)SlowFastMechanism B:Step 1: NO2(g) + NO2(g) = N20,(g)Step 2: N20,(g) → NO(g) + NO,(g)Step 3: NO3 (g) - NO(g) + 02(g)FastSlowFastIdentify the correct mechanism for the thermal and photochemicaldecomposition of NO2. Justify your answer using the mechanistic steps andoverall rate law.d) Cars emit NO2 into the atmosphere. During the day, do you expect the majorityof the NO in the atmosphere to come from the thermal or photochemicaldecomposition reaction? Explain your reasoning.

Photochemical decomposition is a chemical process in which a molecule is cleaved and the larger…

Answered: d) Cars emit NOz into the atmosphere.…

d) Cars emit NOz into the atmosphere. During the day, do you expect the majority of the NO in the atmosphere to come from the thermal or photochemical decomposition reaction? Explain your reasoning.

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter11: Rate Of Reaction

Section: Chapter Questions

Problem 39QAP: The decomposition of azomethane, (CH3)2N2, to nitrogen and ethane gases is a first-order reaction,...

See similar textbooks

Similar questions

The plot below shows the number of collisions with a particular energy for two different temperatures. a. Which is greater, T2 or T1? How can you tell? b. What does this plot tell us about the temperature of the rate of a chemical reaction? Explain your answer.
The acid-catalyzed iodination of acetone CH3COCH3(aq) + I2(aq) CH3COCH2I(aq) + HI(aq) is a common laboratory experiment used in general chemistry courses to teach the method of initial rates. The reaction is followed spectrophotometrically by the disappearance of the color of iodine in the solution. The following data (J. P. Birk and D. L Walters, Journal of Chemical Education, Vol. 69, p. 585, 1992) were collected at 23 C for this reaction. Determine the rate law for this reaction.
The decomposition of azomethane, (CH3)2N2, to nitrogen and ethane gases is a first-order reaction, (CH3)2N2(g)N2(g)+C2H6(g). At a certain temperature, a 29-mg sample of azomethane is reduced to 12 mg in 1.4 s. (a) What is the rate constant k for the decomposition at that temperature? (b) What is the half-life of the decomposition? (c) How long will it take to decompose 78% of the azomethane?
11.64 HBr is oxidized in the following reaction: 4 HBr(g) + O2(g) —• 2 H2O(g) + 2 Br,(g) A proposed mechanism is HBr + O2 -* HOOBr (slow) HOOBr + HBr — 2 HOBr (fast) HOBr + HBr — H2O + Bn (fast) Show that this mechanism can account for the correct stoichiometry. Identify all intermediates in this mechanism. What is the molecularity of each elementary’ step? Write the rate expression for each elementary' step. Identify the rate-determining step.
For the past 10 years, the unsaturated hydrocarbon 1, 3-butadiene (CH2 = CH - CH = CH2) has ranked 38th among the top 50 industrial Chemicals. It is used primarily for the manufacture of synthetic rubber. An isomer exists also as cyclobutene: The isomerization of cyclobutene to butadiene is first-order and the rate constant has been measured as 2.0104s1 at 150 C in a 0.53-L ?ask. Determine the partial pressure of cyclobutene and its concentration after 30.0 minutes if an isomerization reaction is carried out at 150 C with an initial pressure of 55 torr.
Hundreds of different reactions occur in the stratosphere, among them reactions that destroy the Earths ozone layer. The table below lists several (second-order) reactions of Cl atoms with ozone and organic compounds; each is given with its rate constant. For equal concentrations of Cl and the other reactant, which is the slowest reaction? Which is the fastest reaction?
What is the half-life of methyl acetate hydrolysis at 25C in the acidic solution described in Problem 13.99?
Ammonium cyanate, NH4NCO, in water rearranges to produce urea, a common fertilizer, (NH2)2CO: NH4NCO(aq)(NH2)2CO(aq) The rearrangement is a second-order reaction. It takes 11.6 h for the concentration of NH4NCO to go from 0.250 M to 0.0841 M. (a) What is k for the reaction? (b) What is the half-life of the reaction when NH4NCO is 0.100 M? (c) How long will it take to rearrange 39% of a 0.450 M solution? (d) How fast is a 0.839 M solution being changed to urea?
Label the elementary processes for the reaction between H2 and O2 see section 20.7 as initiation, propagation, branching, or termination reactions.
A drug decomposes in the blood by a first-order process. A pill containing 0.500 g of the active ingredient reaches its maximum concentration of 2.5 mg/ 100 mL of blood. If the half-life of the active ingredient is 75 min, what is its concentration in the blood 2.0 h after the maximum concentration has been reached?
The rate constant for the ?rst-order decomposition at 45 C of dinitrogen pentoxide, N2O5, dissolved in chloroform, CHCI3, is 6.2104 min-1. 2N2O54NO2+O2 What is the rate of the reaction when [N2O5] = 0.40 M?
Nitroglycerine is an extremely sensitive explosive. In a series of carefully controlled experiments, samples of the explosive were heated to 160 C and their first-order decomposition studied. Determine the average rate constants for each experiment using the following data: Initial [C3H5N3O9] (M) 4.88 3.52 2.29 1.81 5.33 4.05 2.95 1.72 t (s) 300 300 300 300 180 180 180 180 %Decomposed 52.0 52.9 53.2 53.9 34.6 35.9 36.0 35.4