15. Chemical Kinetics

Which of the following best explains how catalysts increase the rate of chemical reactions?

Which of the following would be a reasonable unit for the rate constant of a second order reaction?

Given the balanced equation 2 NOCl(g) → 2 NO(g) + Cl2(g), if the rate of Cl2 loss is 4.84e-2 M/s, what is the rate of loss of NOCl?

Which of the following graphs best represents the relationship between the concentration of a reactant and the rate of a first-order reaction?

Which term refers to the study of the rates at which chemical reactions occur?

Consider the proposed mechanism for the decomposition reaction 2 H₂O₂(aq) → 2 H₂O(l) + O₂(g) in the presence of I⁻(aq). What is the rate law for this reaction?

Which of the following is NOT an example of a topic studied in chemical kinetics?

Which one of the following sets of units is appropriate for a third-order rate constant?

A certain first-order reaction A → B is 25% complete in 42 min at 25°C. What is the half-life of the reaction?

In the reaction 3 BrO⁻(aq) → BrO₃⁻(aq) + 2 Br⁻(aq), a plot of 1/[BrO⁻] vs. time is linear. What does this indicate about the order of the reaction with respect to BrO⁻?

Given the concentration of H2O decreases from 0.80 M to 0.60 M between 25 s and 65 s, calculate the average rate of the reaction in M/s.

For the reaction 2AsH3(g) ⟶ As2(g) + 3H2(g), the reaction rate can be expressed in terms of the change in concentration of which of the following species?