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

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In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C
HI(g) ½ H2(g) + ½ I½(g)
the following data were obtained:
[HI], M
0.509
0.255
0.128
6.40×10-2
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
s 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)
order reaction is
Ms1
Based on these data, the rate constant for this
Transcribed Image Text:In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C HI(g) ½ H2(g) + ½ I½(g) the following data were obtained: [HI], M 0.509 0.255 0.128 6.40×10-2 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 s 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) order reaction is Ms1 Based on these data, the rate constant for this
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