Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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In a study of the decomposition of ammonia on a tungsten surface at 1100 °C
NH31/2 N2 + 3/2 H2
the following data were obtained:
[NH3], M | 1.31×10-2 | 6.55×10-3 | 3.28×10-3 | 1.64×10-3 |
seconds | 0 | 441 | 661 | 771 |
Hint: It is not necessary to graph these data. FILL IN THE BLANKS
(1)
The observed half life for this reaction when the starting concentration is 1.31×10-2 M is ________s and when the starting concentration is 6.55×10-3 M is ________s.
(2)
The average rate of disappearance of NH3 from t = 0 s to t = 441 s is ______M s-1.
(3)
The average rate of disappearance of NH3 from t = 441 s to t = 661 s is __________M s-1.
(4)
Based on these data, the rate constant for this _______ (zerofirstsecond) order reaction is _____M s-1.
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