b. (2 polo 17. (5 points; 1 point per rate law plus one point for the choice) -

Question

b. (2 polo 17. (5 points; 1 point per rate law plus one point for the choice) - The following four mechanistic hypotheses are plausible. For each table entry, write the expected rate law; then circle the letter of the mechanism supported by the experimental evidence. Mechanism Predicted Rate Law A: | Step 1 NO2 + CO NO + CO2 k, slow | Step 1 Step 2 Step 3 | Step 1 Step 2 Step 3 B: 2NO2 N2O3+ CO + O CO2 N:03 NO + NO2 2NO2 N203 + CO + O CO2 N203 NO + NO2 ki slow k2, fast k3 fast Kt fast k2 slow k3, fast Kt fast K2 fast k3, slow C: Step 2 Step 3 CO +O N:03 NO + NO2 CO2 18 14 noints) - For the correct mechanism from part 1, draw a reaction coordinated iagram. The

Explanation / Answer

Rate depends on rate determine step .•. Slow reaction in mechanism is considered as rate determined step. (A) Rate= K1[NO2][CO] (b) Rate=K1[NO2]2. (C) Rate=K2[CO][O] (D) Rate=K3[N2O3]

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