Problem: The gas-phase decomposition of NO2, NO2 (g) → 2 NO (g) + O2 (g), is studied at 383 oC, giving the following data:Time (s)[NO2] (M)0.00.1005.00.01710.00.009015.00.006220.00.0047If you used the method of initial rates to obtain the order for NO2, predict what reaction rates you would measure in the beginning of the reaction for initial concentrations of 0.200 M, 0.100 M, and 0.050 M NO2.

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Problem Details
The gas-phase decomposition of NO2, NO2 (g) → 2 NO (g) + O2 (g), is studied at 383 oC, giving the following data:


Time (s)[NO2] (M)
0.00.100
5.00.017
10.00.0090
15.00.0062
20.00.0047


If you used the method of initial rates to obtain the order for NO2, predict what reaction rates you would measure in the beginning of the reaction for initial concentrations of 0.200 M, 0.100 M, and 0.050 M NO2.

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Based on our data, we think this problem is relevant for Professor Lee's class at NAU.