Chapter Twelve Chemical Kinetics

1.3  10–2 atm/s 9.0  10–3 atm/s 6.0  10–3 atm/s 4.5  10–2 atm/s The average rate of disappearance of ozone in the reaction 2O3(g)  3O2(g) is found to be 9.0  10–3 atm over a certain interval of time. What is the rate of appearance of O2 during this interval? 1.3  10–2 atm/s 9.0  10–3 atm/s 6.0  10–3 atm/s 4.5  10–2 atm/s 2.7  10–2 atm/s

Rate = k[A] Rate = k[B] Rate = k[A][B] Rate = k[A]2[B] Rate = k[A][B]2 For the reaction A + B  products, the following data were obtained: Initial rate 0.030 0.060 0.060 [A]0 0.10 0.20 0.20 [B]0 0.20 0.20 0.30 What is the experimental rate law? Rate = k[A] Rate = k[B] Rate = k[A][B] Rate = k[A]2[B] Rate = k[A][B]2

The rate constant k is dependent on: the concentration of the reactant. the concentration of the product. the temperature. the order of the reaction.

For which order reaction is the half-life of the reaction proportional to 1/k (where k is the rate constant)? Zero order First order Second order All of these

For a first-order reaction For a first-order reaction aA → Products the first half-life is 20 minutes. What is the second half-life? 10 minutes 20 minutes 40 minutes

For a second-order reaction For a second-order reaction aA → Products the first half-life is 20 minutes. What is the second half-life? 10 minutes 20 minutes 40 minutes

For a zero-order reaction For a zero-order reaction aA → Products the first half-life is 20 minutes. What is the second half-life? 10 minutes 20 minutes 40 minutes

At a particular temperature, the half-life of a zero-order reaction is 20.0 min. How long will it take for the reactant concentration to be depleted by a factor of 8? 20.0 min 35.0 min 60.0 min 140.0 min 160.0 min

The rate determining step of a multi-step reaction can best be described as: The slowest step of the reaction The fastest step of the reaction The first step of the reaction The last step of the reaction

Consider the following potential energy diagram: Which letter shows the activation energy of the uncatalyzed reaction? a b c d e

Consider the following potential energy diagram: Which letter shows the change in energy for the overall reaction? a b c d e

Consider the following potential energy diagram: Which letter shows the activation energy of the catalyzed reaction? a b c d e