Consider the reaction A > B. The initial [A] is 0.10M. After 1.0 hour, 50% of A has reacted. a. Draw agraph of concentration vs. time for each of thecases below. i. The reaction is zero order in A. I. Thereaction is first order in A. b. Predict what theconcentration of A will be after 2.0 hours for eachcase in part a if the initial [A] were 0.050 M. Explainyour reasoning.

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Answered: Consider the reaction A > B. The…

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 87AE: Consider the following representation of the reaction 2NO2(g) 2NO(g) + O2(g). Determine the time...

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Butadiene, C4H6, dimerizes according to the following reaction: C4H6(g)C8H12(g)The dimerization is a second-order reaction. It takes 145 s for the concentration of C4H6 to go from 0.350 M to 0.197 M. (a) What is k for the dimerization? (b) What is the half-life of the reaction when butadiene is 0.200 M? (c) How long will it take to dimerize 28.9% of a 0.558 M sample? d) How fast is 0.128 M butadiene dimerizing?
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.
Consider the following statements: In general, the rate of a chemical reaction increases a bit at first because it takes a while for the reaction to get warmed up. After that, however, the rate of the reaction decreases because its rate is dependent on the concentrations of the reactants, and these are decreasing. Indicate everything that is correct in these statements, and indicate everything that is incorrect. Correct the incorrect statements and explain.
Consider the following representation of the reaction 2NO2(g) 2NO(g) + O2(g). Determine the time for the final representation above if the reaction is a. first order b. second order c. zero order
Use the data provided in a graphical method to determine the order and rate constant of the following reaction: 2PQ+W Time (s) 9.0 13.0 18.0 22.0 25.0 [P] (M) 1.077103 1.068103 1.055103 1.046103 1.039103
For the reaction A + B C, explain at least two ways in which the rate law could be zero order in chemical A.
11.35 For the reaction 2 NO(g) + 2 H?(g) — N,(g) + 2 H,O(g) at 1100°C, the following data have been obtained: [NOJ [HJ Rate = A(N2]/At (mol L~1) (mol L_1) (mol L-1 s_1) 5.0 X 10’1 0.32 0.012 1.0 X 10~’ 0.32 0.048 1.0 X 10"2 0.64 0.096 Derive a rate law for the reaction and determine the value of the rate constant.
Describe how graphical methods can be used to determine the order of a reaction and its rate constant from a series of data that includes the concentration of A at varying times.
Each of the statements given below is false. Explain why. a. The activation energy of a reaction depends on the overall energy change (E) for the reaction. b. The rate law for a reaction can be deduced from examination of the overall balanced equation for the reaction. c. Most reactions occur by one-step mechanisms.
A certain reaction has the form aAProducts At a particular temperature, concentration versus time data were collected. A plot of 1/ [A] versus Lime (in seconds) gave a straight line with a slope of 6.90 102. What is the differential rate law for this reaction? What is the integrated rate law for this reaction? What is the value of the rate constant for this reaction? If [A]0 for this reaction is 0.100 M, what is the first half-life (in seconds)? If the original concentration (at t = 0) is 0.100 M, what is the second half-life (in seconds)?
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.
Two isomers (A and B) of a given compound dimerize as follows: 2Ak1A22Bk2B2 Both processes are known to be second order in reactant, and k1 is known to be 0.250 L/mol s at 25C. In a particular experiment A and B were placed in separate containers at 25C, where [A]0 = 1.00 102M and [B]0 = 2.50 102 M. It was found that after each reaction had progressed for 3.00 min, [A] = 3.00[B]. In this case the rate laws are defined as Rate=[A]t=k1[A]2Rate=[B]t=k2[B]2 a. Calculate the concentration of A2 after 3.00 min. b. Calculate the value of k2 . c. Calculate the half-life for the experiment involving A.

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