Fr the reaction no2g cog gt nog co2g at temperatures

Question

For the reaction NO2(g) + CO(g) => NO(g) + CO2(g) at temperatures below 500 K, the rate law is rate = k [NO2]2. Which mechanism is consistent with this information? Mechanism 1 NO2 + NO2 => NO3 + NO slow CO + NO3 => CO2 + NO2 fast Mechanism 2 NO2 + NO2 => NO3 + NO fast CO + NO3 => CO2 + NO2 slow