5. The reaction A→B+C is known to be first order in A. Below are data showing the concentration of A as a function of reaction time. Time, h 0 2 4 8 16 20 24 [A]. M 1.50 x 10-1 1.35 x 10-1 1.21 x 10-1 9.74 x 10-2 6.32 x 10-2 5.09 x 10-² 4.10 x 10-2 (a) What is the average rate of reaction between 2 and 8 h? Report the units as well as the numbers. (b) Plot the data above, showing the concentration of A as a function of the time. From your graph, determine the instantaneous rate of reaction at 16 h. Report the units as well as the numbers. (c) Plot In [A] versus time. Estimate the rate constant for this first-order reaction from your graph. Report the units as well as the numbers.

5. The reaction A→B+C is known to be first order in A. Below are data showing the concentration of A as a function of reaction time. Time, h 0 2 4 8 16 20 24 [A]. M 1.50 x 10-1 1.35 x 10-1 1.21 x 10-1 9.74 x 10-2 6.32 x 10-2 5.09 x 10-² 4.10 x 10-2 (a) What is the average rate of reaction between 2 and 8 h? Report the units as well as the numbers. (b) Plot the data above, showing the concentration of A as a function of the time. From your graph, determine the instantaneous rate of reaction at 16 h. Report the units as well as the numbers. (c) Plot In [A] versus time. Estimate the rate constant for this first-order reaction from your graph. Report the units as well as the numbers.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter12: Chemical Kinetics

Section: Chapter Questions

Problem 110CP: Consider the following hypothetical data collected in two studies of the reaction 2A+2BC+2D Time(s)...

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Consider the following hypothetical data collected in two studies of the reaction 2A+2BC+2D Time(s) Experiment 1 [A] (mol/L) Experiment 2 [A] (mol/L) 0 1.0 102 1.0 102 10. 8.4 103 5.0 103 20. 7.1 103 2.5 103 30. ? 1.3 103 40. 5.0 103 6.3 104 In Experiment 1, [B]0 = 10.0 M. In Experiment 2, [B]0 = 20.0 M. Rate=[A]t a. Use the concentration versus time data to determine the rate law for the reaction. b. Solve for the value of the rate constant (k) for the reaction. Include units. c. Calculate the concentration of A in Experiment 1 at t =30.s