Questions and Answers
What is the definition of 'end me'?
and SmartWork5
Part 1: The green curve in the concentration versus time diagram is associated with which chemical in the balanced reaction of nitrous oxide decomposition?
N2O
Part 2: The blue curve in the concentration versus time diagram is associated with which chemical in the balanced reaction of nitrous oxide decomposition?
N2
What is Rate 1 for the reaction of dinitrogen pentoxide (N2O5) decomposition?
Signup and view all the answers
What is Rate 2 for the reaction of dinitrogen pentoxide (N2O5) decomposition?
Signup and view all the answers
What is Rate 3 for the reaction of dinitrogen pentoxide (N2O5) decomposition?
Signup and view all the answers
What is Rate 4 for the reaction of dinitrogen pentoxide (N2O5) decomposition?
Signup and view all the answers
What is the correct rate law for the reaction of hydrogen gas reducing NO to N2 at 1500°C?
Signup and view all the answers
What is the rate constant for the reaction of hydrogen gas reducing NO to N2 at 1500°C?
Signup and view all the answers
Write the rate law for the reaction between an organic molecule A and NaSH based on the provided observations.
Signup and view all the answers
Part 1: What is the rate law for the decomposition of the hydroperoxyl radical HO2?
Signup and view all the answers
Part 2: What is the value of the rate constant for the reaction involving HO2 at 298 K?
Signup and view all the answers
What is the concentration of A after 180.0 minutes if the initial concentration was 3.25 M and the reaction is second order?
Signup and view all the answers
Part 1: What is the value of k for the second-order dimerization of ClO at 350 K?
Signup and view all the answers
Part 2: What is the value of the half-life for the dimerization of ClO at 350 K?
Signup and view all the answers
Study Notes
Reactions and Rate Laws
- Nitrous oxide decomposes into nitrogen and oxygen per the reaction: 2N2O(g) → 2N2(g) + O2(g).
- Concentration versus time plot indicates green curve associates with N2O, while blue curve associates with N2.
Dinitrogen Pentoxide Decomposition
- Dinitrogen pentoxide (N2O5) decomposes to nitrogen dioxide (NO2) and nitrogen trioxide (NO3): N2O5(g) → NO2(g) + NO3(g).
- Average rates of reaction (molecules/(cm³ × s)) calculated:
- Rate 1: 4.9 x 10^10
- Rate 2: 3.1 x 10^10
- Rate 3: 2.0 x 10^10
- Rate 4: 1.0 x 10^10
Hydrogen Gas Reaction
- Reaction: 2H2(g) + 2NO(g) → 2H2O(g) + N2(g).
- Initial reaction rates obtained at 1500°C for varying concentrations of H2 and NO.
- Rate law derived: Rate = k[H2]^2[NO].
- Rate constant at 1500°C: 6.36 M^-1s^-1.
Organic Reaction Rate Law
- For reaction between organic molecule A and NaSH:
- Tripling [A] triples the rate.
- Doubling [A] while cutting [NaSH] reduces the rate.
- Halving [A] and quadrupling [NaSH] doubles the rate.
- Derived rate law: Rate = k[A][NaSH].
Atmospheric Chemistry and Hydroperoxyl Radical
- Hydroperoxyl radical (HO2) decomposes into H2O2 and O2.
- Rate law determined: Rate = k[HO2].
- Rate constant at 298 K: 0.854 µs^-1.
Second Order Reactions
- Reaction: 2A → A2 determined to be second order with rate constant k = 0.0265 M^-1min^-1.
- Initial concentration of A = 3.25 M; concentration after 180 min = 0.197 M.
Dimerization of ClO
- Reaction: 2CIO(g) → CI2O2.
- Rate constant (k) at 350 K: 6.75 x 10^-6 cm³/molecules × s.
- Half-life at 350 K: 0.712 s.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore key concepts and terms from Chemistry II, Chapter 13, with our interactive flashcards. This quiz covers topics like nitrous oxide decomposition and concentration-time plots, helping you master the material effectively.
