In a study of the decomposition of ammonia on a tungsten surface at 1100 °C NH3 1/2 N₂ + 3/2 H₂ the following data were obtained: [NH3], M seconds 6.33x10-3 3.17x10-3 440 1.59x10-3 7.95x10-4 772 661 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 6.33x10-³ M is starting concentration is 3.17x10-³ M is (2) The average rate of disappearance of NH3 from t = 0 s to t = 440 s is S. (3) The average rate of disappearance of NH3 from t = 440 s to t = 661 s is (4) Based on these data, the rate constant for this ✓ zero first order reaction is M S-1 M s-¹ M s-¹. Is and when the Brovinun Nox

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Chapter1: Chemical Foundations
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In a study of the decomposition of ammonia on a tungsten surface at 1100 °C
NH3- →1/2 N₂ + 3/2 H₂
the following data were obtained:
[NH3], M
seconds
6.33x10-3
3.17x10-3 1.59x10-3
440
661
Hint: It is not necessary to graph these data.
(1)
The observed half life for this reaction when the starting concentration is 6.33x10-³ M is
starting concentration is 3.17x10-³ M is
(4)
Based on these data, the rate constant for thi
7.95x10-4
S.
(2)
The average rate of disappearance of NH3 from t = 0 s to t = 440 s is
✓
772
(3)
The average rate of disappearance of NH3 from t = 440 s to t = 661 s is
zero
first
second
order reaction is
M s-¹.
M s-¹.
M s-¹.
Is and when the
Previous
Nex
Transcribed Image Text:In a study of the decomposition of ammonia on a tungsten surface at 1100 °C NH3- →1/2 N₂ + 3/2 H₂ the following data were obtained: [NH3], M seconds 6.33x10-3 3.17x10-3 1.59x10-3 440 661 Hint: It is not necessary to graph these data. (1) The observed half life for this reaction when the starting concentration is 6.33x10-³ M is starting concentration is 3.17x10-³ M is (4) Based on these data, the rate constant for thi 7.95x10-4 S. (2) The average rate of disappearance of NH3 from t = 0 s to t = 440 s is ✓ 772 (3) The average rate of disappearance of NH3 from t = 440 s to t = 661 s is zero first second order reaction is M s-¹. M s-¹. M s-¹. Is and when the Previous Nex
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