In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g) % H2(g) + ½ I½(g) the following data were obtained: |[HI], M 0.509 0.255 0.128 6.40x102 seconds 520 780 911 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.509 M is and when the starting concentration is 0.255 M is (2) The average rate of disappearance of HI from t 0 s to t= 520 s is Ms. (3) The average rate of disappearance of HI from t = 520 s to t= 780 s is Ms (4) v order reaction is Ms Based on these data, the rate constant for this

In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g) % H2(g) + ½ I½(g) the following data were obtained: |[HI], M 0.509 0.255 0.128 6.40x102 seconds 520 780 911 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.509 M is and when the starting concentration is 0.255 M is (2) The average rate of disappearance of HI from t 0 s to t= 520 s is Ms. (3) The average rate of disappearance of HI from t = 520 s to t= 780 s is Ms (4) v order reaction is Ms Based on these data, the rate constant for this

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g)% H,(g) + % »(9) the following data were obtained: HI], M seconds 0.274 0.137 6.85×10-2 3.43x10-2 521 782 912 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 0.274 M is s and when the starting concentration is 0.137 M is (2) The average rate of disappearance of HI from t= 0s to t= 521 s is| Ms!. (3) The average rate of disappearance of HI from t= 521 s to t= 782 s is| Ms! (4) Based on these data, the rate constant for this | | order reaction is Ms!.
a The rate law for the reaction rogress 2NOBr(g) → 2NO(g) + Br2 (g) at some temperature is ΔΙΝΟΒ Rate = - = k[NOB1]² At If the half-life for this reaction is 2.00 s when [NOB1]o= 0.90 M, calculate the value of k for this reaction. k = L/mol·s Submit
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The rate constant for a given reaction is k = 0.312 M1s1. If the initial concentration of reactant is 1.00 M, the what is the length of the third half-life (in seconds)?
At a certain temperature the rate of this reaction is first order in N₂O5 with a rate constant of 0.0125 s¯¹: 2N₂O5 (g) → 2N₂O4 (8) + 0₂ (8) Suppose a vessel contains N₂O5 at a concentration of 1.14M. Calculate the concentration of N₂O5 in the vessel 88.0 seconds later. You may assume no of reaction is important. Round your answer to 2 significant digits.
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