For the reaction NO2(g) + CO NO(g) + CO2 (g) . The initial rate of the 20) react

Question

For the reaction NO2(g) + CO NO(g) + CO2 (g) . The initial rate of the 20) reaction is measured at 4 different concentrations of the reactants [NO2] and [CO] with four results (rate 1, 2, 3 , 4 for four experiments) . From the data table, determine: a. the rate law for the reaction. b. the rate constant (k) for the reaction

Experiment NO2 CO Rate in M.S.-1

1) 0.10M 0.10M 0.0021

2) 0.20M 0.10M 0.0082

3) 0.20M 0.20M 0.0082

4) 0.40M 0.10M 0.033

(Hint: rate = K . [NO2] x [CO]y The K is same for the four experiments (four rate) .

Rate 1 = 0.0021 = k . (0.10 )x. (0.10)y ;

Rate 2 =0.0082 = k. (0.20 )x (0.10)y

Rate 3 = 0.0082 = k . (0.20 )x. (0.20)y ;

Rate 4 = 0.033 = k . (0.40 )x. (0.10)y

Use "Rate 1/ Rate 2 ", or "Rate 2/ Rate 4" or other ratios to cancel K, then calculte x and y. After you get x and y, plug in any rate to calculte the K )

Answer: a. the rate law for the reaction. rate = K . [NO2] ? [CO]?

b. the rate constant (k) for the reaction . K= Rate/ [NO2] x [CO]y = ? ( M/S)

Explanation / Answer

For the reaction NO2(g) + CO NO(g) + CO2 (g) . The initial rate of the 20) react

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