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Question description

 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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