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QUESTION

In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C

In a study of the decomposition of hydrogen iodide on a gold surface at 150 °C

HI(g)In a study of the decomposition of hydrogen iodide on a gold surface½ H2(g) + ½ I2(g)

the following data were obtained:

[HI], M0.3400.1708.50E-24.25E-2seconds0521781911

Hint: It is not necessary to graph these data.

(1)

The observed half life for this reaction when the starting concentration is 0.340 M is s and when the starting concentration is 0.170 M is s.

(2)

The average rate of disappearance of HI from t = 0 s to t = 521s is  M s-1.

(3)

The average rate of disappearance of HI from t = 521s to t = 781s 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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