2. For kinetic analysis, a stoichiometric gas mixture of NO and O2 was prepared. During the reaction 2NO O2=2NO2 at T=298 K, the following change in the half-life of the gas mixture was observed depending on the initial pressure. Determine the order of this reaction and calculate the average rate constant
Р0*10-4 Pa 3.04 2.53 2.03 1.52 1.01
t1/2, s 24.7 35.6 55.3 98.7 223.5

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