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NO2(g) + CO(g) " src="http://loncapa.net/res/sfu/batchelo/Gallery/rarrow.gif"> NO(g) + CO2(g)

The rate of the above reaction depends only on the concentration of nitrogen dioxide at temperatures below 225°C.
At a temperature below 225°C the following data were obtained:

 Time
(s) 
[NO2]
(mol/L)
0 0.520
1.10×103 0.481
2.75×103 0.433
4.12×103 0.400
8.25×103 0.325
1.65×104 0.236


Which of the following expressions for the rate law (either differential or integrated) are completely consistent with the above experimental data.


k[NO2]3 = -d[CO]/dt

ln([NO2]/[NO2]0) = -kt

k[NO2]2 = d[NO]/dt

-d[CO]/dt = k[NO2]2

1/[NO2] - 1/[NO2]0 = kt
Calculate the rate constant (k).
Enter the numerical value and corresponding units.

units.

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(Top Tutor) Daniel C.
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School: University of Virginia
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