Sign in to Curology Access Pear Pearson My Student Gr Work - Akti N. [GET ANSW Effect of Eo Theater 130 Launch Mes app.aktiv.com Gmail YouTube News Home | Cassity Sim... Mathway | Algebra... Find College Schola... Anatomy quizzes Scholarships = Scho... Size 3 Women's Sho... angie 21 Candidate Home All Bookmarks Question 9 of 47 Submit A student proposes the following step of a mechanism. Why would an expert question this mechanism step? \[ 3 \mathrm{~A}+\mathrm{B} \rightarrow 2 \mathrm{C} \] A The number of reactants and products must be the same. B The number of products must always exceed the reactants. C This would require 4 molecules to collide and react simultaneously. D This step should be reversible. E An expert would not question this step.
Added by Rya
Close
Step 1
Step 1: Analyze the proposed mechanism step: \(3 \mathrm{~A} + \mathrm{B} \rightarrow 2 \mathrm{C}\). Show more…
Show all steps
Your feedback will help us improve your experience
Dr. Satish Ingale and 50 other Chemistry 102 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Evaluate the plausibility of the proposed reaction mechanism for: H2S + O2 → SO + H2O That was observed to be second order with regard to H2S. H2S → 2 H+ + S <slow> 2 H+ + O2 → H2O + O S + O → SO The reaction mechanism is plausible The rate law suggested by the mechanism does not match the observed rate law making it not plausible The reaction mechanism has more than four products created making it not plausible The reaction mechanism has more than three reactants combining making it not plausible The reaction mechanism does not add up to the overall reaction making it not plausible
Sri K.
Consider the hypothetical reaction $2 \mathrm{A}+\mathrm{B} \longrightarrow 2 \mathrm{C}+\mathrm{D}$ . The following two-step mechanism is proposed for the reaction: $$ \begin{array}{l}{\text { Step } 1 : \mathrm{A}+\mathrm{B} \longrightarrow \mathrm{C}+\mathrm{X}} \\ {\text { Step } 2 : \mathrm{A}+\mathrm{X} \longrightarrow \mathrm{C}+\mathrm{D}}\end{array}$$ $X$ is an unstable intermediate. (a) What is the predicted rate law expression if Step 1 is rate determining? (b) What is the predicted rate law expression if Step 2 is rate determining? (c) Your result for part (b) might be considered surprising for which of the following reasons: (i) The concentration of a product is in the rate law. (ii) There is a negative reaction order in the rate law. (ii) Both reasons (i) and (ii). (iv) Neither reasons (i) nor (ii).
b) (1 mark) What is the rate law that describes the production of product E? This rate law can include concentrations of intermediates (do not try to manipulate the rate law further at this point). c) (2 marks) Write down an expression for the concentration of the intermediate in terms of reactant and/or product concentrations using the steady state approximation. d) (2 marks) Use your results from parts (b) and (c) to derive the general rate law of this reaction using the steady state approximation. Make no assumptions on which step is rate-limiting. e) (1 mark) An experimentally derived rate law for this reaction was found to be rate = k[A]. Based on this observation, would you expect Step 1 to be faster or slower than Step 2? Briefly explain your answer, using the rate law you derived in part (d).
Adi S.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Watch the video solution with this free unlock.
EMAIL
PASSWORD