Chemical Kinetics - Practice Problems, Lecture notes of Chemical Kinetics

Download Chemical Kinetics - Practice Problems and more Lecture notes Chemical Kinetics in PDF only on Docsity! General Chemistry II Chemical Kinetics - Practice Problems 1. Which of the following graphs best describes the relationship between the rate of a reaction and the temperature of the reaction? T R a t e T R a t e T R a t e T R a t e T R a t e General Chemistry II 2. Describe the difference between the terms rate of reaction, rate law, and rate constant. Give an example of each. 3. What are the units of the rate constant for the following reaction? 2NO2(g) → N2O4(g) Rate = k [NO2]2 4. Calculate the rate at which N2O4 is formed in the following reaction at the moment in time when NO2 is being consumed at a rate of 0.0592 M/s: 2NO2(g) → N2O4(g) 5. NO reacts with H2 according to the following equation: 2NO(g) + 2H2(g)→ N2(g) + 2H2O(g) The mechanism for this reaction involves two steps: 2NO + H2 → N2 + H2O2 (slow step) H2O2 + H2 → 2H2O (fast step) What is the experimental rate law for this reaction? 6. The disproportionation of NO to N2O and NO2 is third order in NO: 3NO(g) → N2O(g) + NO2(g) Rate = k [NO]3 This rate law is consistent with which of the following mechanisms? a) 3NO → N2O + NO2 (one-step) b) 2NO → N2O2 (slow step) N2O2 + NO → N2O + NO2 (fast step) c) 2NO N2O2 (fast step) N2O2 + NO → N2O + NO2 (slow step)