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13 Dec 2019
At temperatures below 500 K, the reaction between carbon monoxide and nitrogen dioxide
CO (g) + NO2 (g) ? CO2 (g) + NO (g)
has the following rate equation: Rate = k[NO2]2. Which of the three mechanisms suggested here agrees with the experimentally observed rate equation?
Mechanism 1: Step 1 Slow NO2 + NO2 ? NO3 + NO
Step 2 Fast NO3 + CO ? NO2 + CO2
Mechanism 2: Step 1 Fast NO2 + NO2 ? N2O3 + O
Step 2 Slow N2O3 + O + CO ? CO2 + NO2 + NO
Mechanism 3: CO + NO2 ? CO2 + NO
At temperatures below 500 K, the reaction between carbon monoxide and nitrogen dioxide
CO (g) + NO2 (g) ? CO2 (g) + NO (g)
has the following rate equation: Rate = k[NO2]2. Which of the three mechanisms suggested here agrees with the experimentally observed rate equation?
Mechanism 1: Step 1 Slow NO2 + NO2 ? NO3 + NO
Step 2 Fast NO3 + CO ? NO2 + CO2
Mechanism 2: Step 1 Fast NO2 + NO2 ? N2O3 + O
Step 2 Slow N2O3 + O + CO ? CO2 + NO2 + NO
Mechanism 3: CO + NO2 ? CO2 + NO
Patrina SchowalterLv2
17 Dec 2019