General Chemistry: Principles and Modern Applications (11th Edition)
11th Edition
ISBN: 9780132931281
Author: Ralph H. Petrucci, F. Geoffrey Herring, Jeffry D. Madura, Carey Bissonnette
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 20, Problem 71E
Interpretation Introduction
Interpretation:
The rate expression for the formation of double helix in DNA is to be derived from the following mechanism:
Where S1 and S2 represent strand 1 and 2 and (S1:S2)* is the unstable helix.
Concept introduction:
- An intermediate is species that is formed during the reaction but is not the product of that reaction. It means it is produced during the reaction and consumed during the reaction.
- Steady state approximation is a method to derive the rate law. According to this, the intermediate is consumed as soon as it is produced.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Help?
Phosgene (COCI) reacts with formaldehyde in the following reaction to produce dichloromethane and
carbon dioxide:
CoCI, + CH;0 → CH;Cl, + CO,
P+F>D+C
Activated charcoals have been found to catalyse this reaction at 170 °C (Ryan & Stacey, 1984).
One possible mechanism by which the reaction is thought to occur is shown below:
P+s = P.S
Egn 1
P.S + Fie
1.
C.S +D Egn 2
C.S
C+S
Egn 3
a) What type of reaction is Eqn 2 in the mechanism?
b) Write rate expressions (aka rate law aka isotherms) for all the reactions.
c) What do you believe would be the rate limiting step? Use this to derive the rate law for the reaction.
d) What is the best way to confirm the rate law you derived theoretically in c)?
A+OHA+H₂O
O₂ (g) ⇒ 0₂ (soln)
O₂ (soln) + X⇒ B
B + A⇒X+ products
(fast equilibrium)
(fast)
(fast)
(slow)
Show that the observed rate law: d[products]/dt = kobs[B][A][OH]. Include step-by-step solution.
Chapter 20 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
Ch. 20 - In the reaction 2A+BC+3D , reactant A is found to...Ch. 20 - From Figure 20-2 estimate the rate of reaction at...Ch. 20 - In the reaction A products, [A] is found to be...Ch. 20 - In the reaction A products, at t = 0. [A]= 0.1565...Ch. 20 - In the reaction A products. 4.40 min after the...Ch. 20 - Refer to Experiment 2 of Table 20.3 and to...Ch. 20 - For the reaction A+2BC ,the rate of reaction is...Ch. 20 - If the rate of reaction (20.3) is 5.7104 M s-1 ,...Ch. 20 - In the reaction A(g)B(g)+C(g) , the totalpressure...Ch. 20 - At 65C , the half-life for the first-order...
Ch. 20 - The initial rate of the reaction A+BC+D is...Ch. 20 - For the reaction A+BC+D , the following initial...Ch. 20 - Prob. 13ECh. 20 - The following data are obtained for the initial...Ch. 20 - One of the following statements is true and the...Ch. 20 - One of the following statements true and the other...Ch. 20 - The first-order reaction A products has t1/2=180...Ch. 20 - The reaction A products is first order in A....Ch. 20 - The reaction A products is first order A. a. If...Ch. 20 - In the first-order reaction A products, [A] =...Ch. 20 - In the first-order reaction A products, it found...Ch. 20 - The half-life of me radioactive isotope...Ch. 20 - Acetoacetic acid, CH2COOH2COOH , a reagent in...Ch. 20 - The following first-order reaction occurs in...Ch. 20 - For the reaction A- products, the following data...Ch. 20 - The decomposition of dimethyl ether at 504C is (...Ch. 20 - [Hint: There are several of arrivivg at answer for...Ch. 20 - [Hint: There are several of arrivivg at answer for...Ch. 20 - Prob. 29ECh. 20 - Prob. 30ECh. 20 - Prob. 31ECh. 20 - Prob. 32ECh. 20 - [Hint: There are several of arrivivg at answer for...Ch. 20 - [Hint: There are several ways of arrivivig at...Ch. 20 - Prob. 35ECh. 20 - Prob. 36ECh. 20 - For the reaction A products, the following data...Ch. 20 - Prob. 38ECh. 20 - For the reaction A products, the data tabulated...Ch. 20 - For the reaction A2B+C , the following data are...Ch. 20 - In three different experiments, the following...Ch. 20 - Ammonia decomposes on the surface of a hot...Ch. 20 - Prob. 43ECh. 20 - Consider three hypothetical reactions A — products...Ch. 20 - Prob. 45ECh. 20 - If even tiny sped is introduced into a mixture of...Ch. 20 - For me reversible reaction A+BC+D , the enthalpy...Ch. 20 - Prob. 48ECh. 20 - By inspection of the reaction profile for the...Ch. 20 - By inspection of the reaction profile for the...Ch. 20 - The rate constant for the reaction...Ch. 20 - At what temperature will the rate constant for the...Ch. 20 - Prob. 53ECh. 20 - The reaction C2H5+OHC2H5OH+I was studied in an...Ch. 20 - The first-order reaction A products has a...Ch. 20 - For the first-order reaction N2O4(g)2NO2+12O2g...Ch. 20 - Prob. 57ECh. 20 - Concerning the rule of thumb stated r Exercise 57,...Ch. 20 - The following statements about catalysis are not...Ch. 20 - Prob. 60ECh. 20 - What are the similarities and differences between...Ch. 20 - Certain gas-phase reactions on a heterogeneous...Ch. 20 - The graph show s the effect of enzyme...Ch. 20 - The graph shows the effect of temperature on...Ch. 20 - Prob. 65ECh. 20 - Prob. 66ECh. 20 - The reaction 2NO+2H2N2+2H2O is second order m [NO]...Ch. 20 - The mechanism proposed for me reaction of H2(g)...Ch. 20 - The reaction 2NO+Cl22NOCl has rate law: rate of...Ch. 20 - A simplified rate law 1o the reaction 2O2(g)3O2(g)...Ch. 20 - Prob. 71ECh. 20 - One proposed meachanism for the condensation of...Ch. 20 - Suppose that the reaction r Example 20-8 is first...Ch. 20 - [A]t as a function of time for the reaction A —...Ch. 20 - Exactly 300 s after decomposition of H2O2(aq)...Ch. 20 - Use the method of Exercise 75 to determine the...Ch. 20 - Prob. 77IAECh. 20 - Prob. 78IAECh. 20 - Hydroxide ion is involved in the mechanism of the...Ch. 20 - The half-life for the first-order decomposition of...Ch. 20 - The decomposition of ethylene oxide at 690 K is...Ch. 20 - Prob. 82IAECh. 20 - The following data are for the reaction 2 A + B ...Ch. 20 - Prob. 84IAECh. 20 - Prob. 85IAECh. 20 - Prob. 86IAECh. 20 - The following three-step mechanism has been...Ch. 20 - Prob. 88IAECh. 20 - Prob. 89IAECh. 20 - Prob. 90IAECh. 20 - Prob. 91IAECh. 20 - Prob. 92IAECh. 20 - Prob. 93IAECh. 20 - You want to test the following proposed mechanism...Ch. 20 - Prob. 95IAECh. 20 - Benzenediazonium chloride decomposes by a...Ch. 20 - The object is to study the kinetics of the...Ch. 20 - Prob. 98SAECh. 20 - Prob. 99SAECh. 20 - Explain the important distinctions between each...Ch. 20 - Prob. 101SAECh. 20 - A first-order reaction A — products, has a...Ch. 20 - Prob. 103SAECh. 20 - Prob. 104SAECh. 20 - The rate of a chemical reaction generally...Ch. 20 - For the reaction A+B2C, which proceeds by a...Ch. 20 - Prob. 107SAECh. 20 - Prob. 108SAECh. 20 - Prob. 109SAECh. 20 - For me reaction A products the following data are...Ch. 20 - For the reaction A+2BC+D , the rate law is rate...Ch. 20 - Prob. 112SAECh. 20 - If the plot of the reactant concentration versus...Ch. 20 - Prob. 114SAECh. 20 - Prob. 115SAE
Knowledge Booster
Similar questions
- Can a reaction mechanism ever be proven correct? Can it be proven incorrect?arrow_forwardA reaction is believed to occur by the following mechanism: Stepl: 2AI (Fast equilibrium) Step 2: I + B C (Slow) Overall: 2 A + B C What experimentally determined rate law would lead to this mechanism? (a) Rate = k[A][B] (b) Rate = k[A]2[B] (c) Rate = k[A]2 (d) Rate = k[I][B]arrow_forwardOne mechanism for the destruction of ozone in the upper atmosphere is a. Which species is a catalyst? b. Which species is an intermediate? c. Ea for the uncatalyzed reaction O3(g)+O(g)2O2(g) is 14.0 kJ. Ea. for the same reaction when catalyzed is 11.9 kJ. What is the ratio of the rate constant for the catalyzed reaction to that for the uncatalyzed reaction at 25C? Assume that the frequency factor A is the same for each reaction.arrow_forward
- For a first order gas phase reaction A products, k = 7.2 104s1 at 660. K and k = 1.7 102s1 at 720. K. If the initial pressure of A is 536 torr at 295C, how long will it take for the pressure of A to decrease to 268 torr?arrow_forwardConsider the following reaction mechanism. Step 1 : W2 ⇌ 2W (fast) Step 2 : W + Z ⇌ D + F (fast) Step 3 : W + F → M (slow)Determine the order of the reactionarrow_forwardExplain what happens as a reaction starts with delt G<0 and reached the point where delt G= 0?arrow_forward
- 2NO2(g)+F2(g)→NO2F(g)ΔH∘rxn=−284kJ/molrxn NO2(g) and F2(g) can react to produce NO2F(g), as represented above. A proposed mechanism for the reaction has two elementary steps, as shown below. Step 1: NO2+F2→NO2F+F (slow) Step 2: NO2+F→NO2F (fast) (a) Write a rate law for the overall reaction that is consistent with the proposed mechanism.arrow_forwardConsider the following reaction mechanism. Step 1 : W2 ⇌ 2W (fast) Step 2 : W + Z ⇌ D + F (fast) Step 3 : W + F → M (slow)Write the overall reaction.arrow_forwardConsider the following reaction mechanism. Step 1 : W2 ⇌ 2W (fast) Step 2 : W + Z ⇌ D + F (fast) Step 3 : W + F → M (slow)Which step requires the highest activation energy?arrow_forward
- Consider the following reaction mechanism. Step 1 : W2 ⇌ 2W (fast) Step 2 : W + Z ⇌ D + F (fast) Step 3 : W + F → M (slow)What are the intermediates?arrow_forwardThe mechanisms shown below have been proposed to explain the kinetics of the reaction2 NO (g) + 2 H2 (g) ⇄ N2 (g) + 2 H2O (g)Mechanism IH2 (g) + 2 NO (g) ⇄ N2O (g) + H2O (g) (fast)H2 (g) + N2O (g) H2O (g) + N2 (g) (slow)Mechanism IIH2 (g) + 2 NO (g) N2O (g) + H2O (g) (slow)H2 (g) + N2O (g) ⇄ H2O (g) + N2 (g) (fast)Mechanism IIIH2 (g) + NO (g) 2 H2O (g) + N (g) (slow)N (g) + NO (g) ⇄ N2 (g) + O (g) (fast)H2 (g) + O (g) H2O (g) (fast)Which is consistent with the following experimental data?arrow_forwardConsider the reaction between iodine and hydrogen to form hydrogen iodide. Here are two possible mechanisms: I2 ⇌ 2 I. fast (rate constants k1, k−1) I + H2 ⇌ H2I fast (rate constants k2, k−2) H2I + I → 2HI. slow (rate constant k3) I2 ⇌ 2 I (rate constants k1, k−1) I+H2 →HI+H (rate constant k2) H+I2 →HI+I (rate constant k3) a. One of the mechanisms is a chain reaction. Choose which one, explain your reasoning, and identify in the mechanism the three stages (initiation, propagation, and termination) associated with such a reaction. b. Work out the rate law for the formation of HI using the first mechanism (mechanism i), noting all approximations you make. c. The reverse of the overall reaction between hydrogen and iodine is the decomposition of HI. The rate constant associated with this decomposition has a value of 1.2 x 10−3 L mol−1sec−1 at 700 K and 3.0 x 10−5…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning