Chemistry
13th Edition
ISBN: 9781259911156
Author: Raymond Chang Dr., Jason Overby Professor
Publisher: McGraw-Hill Education
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Chapter 13, Problem 13.117QP
Interpretation Introduction
Interpretation:
The rate of the given reactions from graphs has to be ranked. The
Concept introduction:
Exothermic reaction: Exothermic reaction is said to be a
Endothermic reaction: Endothermic reaction is said to be a chemical reaction in which energy will consumed in the form of heat. In general this reaction has to be represented as follows.
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Consider these three reactions as the elementary steps in the mechanism for a chemical reaction.(i) Cl2 (g) + Pt (s) à 2Cl (g) + Pt (s) Ea = 1550 kJ ∆H = – 950 kJ(ii) Cl (g)+ CO (g) + Pt (s) à ClCO (g) + Pt (s) Ea = 2240 kJ ∆H = 575 kJ(iii) Cl (g) + ClCO (g) à Cl2CO (g) Ea = 2350 kJ ∆H = – 825 kJ
e. Which reaction intermediate would be considered a catalyst (if any) and why?f. If you were to add 2700kJ of activation energy to the reaction, would you be able to make thereaction reverse itself (i.e. have the products become reactants)? Justify your answer.g. If you were to added a positive catalyst to step (iii) what would the end result be? Justify yourprediction. h. Your friend is looking at your graph and states that she believes that step (ii) is the ratedetermining step. Do you agree with her? Justify your reasoning.
Consider these three reactions as the elementary steps in the mechanism for a chemical reaction.(i) Cl2 (g) + Pt (s) à 2Cl (g) + Pt (s) Ea = 1550 kJ ∆H = – 950 kJ(ii) Cl (g)+ CO (g) + Pt (s) à ClCO (g) + Pt (s) Ea = 2240 kJ ∆H = 575 kJ(iii) Cl (g) + ClCO (g) à Cl2CO (g) Ea = 2350 kJ ∆H = – 825 kJ
a. Draw the potential energy diagram for the reaction. Label the data points for clarity.The potential energy of the reactants is 600 kJ.
b. What is the overall chemical equation?
c. What is the overall change in enthalpy for the above chemical reaction?
d. What is the overall amount of activation energy for the above chemical reaction?
e. Which reaction intermediate would be considered a catalyst (if any) and why?
f. If you were to add 2700kJ of activation energy to the reaction, would you be able to make the reaction reverse itself (i.e. have the products become reactants)? Justify your answer.
g. If you were to added a positive catalyst to step (iii) what would the end result be? Justify…
Consider these three reactions as the elementary steps in the mechanism for a chemical reaction.(i) Cl2 (g) + Pt (s) à 2Cl (g) + Pt (s) Ea = 1550 kJ ∆H = – 950 kJ(ii) Cl (g)+ CO (g) + Pt (s) à ClCO (g) + Pt (s) Ea = 2240 kJ ∆H = 575 kJ(iii) Cl (g) + ClCO (g) à Cl2CO (g) Ea = 2350 kJ ∆H = – 825 kJ
e. Which reaction intermediate would be considered a catalyst (if any) and why?f. If you were to add 2700kJ of activation energy to the reaction, would you be able to make thereaction reverse itself (i.e. have the products become reactants)? Justify your answer.g. If you were to added a positive catalyst to step (iii) what would the end result be? Justify yourprediction.h. Your friend is looking at your graph and states that she believes that step (ii) is the ratedetermining step. Do you agree with her? Justify your reasoning.
Chapter 13 Solutions
Chemistry
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Ch. 13.3 - Calculate the half-life of the decomposition of...Ch. 13.3 - The reaction 2A B is second order with a rate...Ch. 13.3 - Consider the first-order reaction A B in which A...Ch. 13.3 - Consider the reaction A products. The half-life...Ch. 13.3 - Consider the first-order reaction A products. The...Ch. 13.3 - What is the initial concentration of a reactant in...Ch. 13.4 - The second-order rate constant for the...Ch. 13.4 - The first-order rate constant for the reaction of...Ch. 13.4 - What is the activation energy of a particular...Ch. 13.4 - Prob. 2RCFCh. 13.5 - The reaction between NO2 and CO to produce NO and...Ch. 13.5 - The rate law for the reaction H2 + 2IBr I2 + 2HBr...Ch. 13.5 - For the reaction between NO and O2, the following...Ch. 13.6 - Which of the following is false regarding...Ch. 13 - What is meant by the rate of a chemical reaction?...Ch. 13 - Distinguish between average rate and instantaneous...Ch. 13 - Prob. 13.3QPCh. 13 - Can you suggest two reactions that are very slow...Ch. 13 - Write the reaction rate expressions for the...Ch. 13 - Write the reaction rate expressions for the...Ch. 13 - Consider the reaction 2NO(g)+O2(g)2NO2(g) Suppose...Ch. 13 - Consider the reaction N2(g)+3H2(g)2NH3(g) Suppose...Ch. 13 - Explain what is meant by the rate law of a...Ch. 13 - What are the units for the rate constants of...Ch. 13 - Consider the zero-order reaction: A product. (a)...Ch. 13 - On which of the following properties does the rate...Ch. 13 - The rate law for the reaction...Ch. 13 - Use the data in Table 13.2 to calculate the rate...Ch. 13 - Consider the reaction A+Bproducts From the...Ch. 13 - Consider the reaction X+YZ From the following...Ch. 13 - Determine the overall orders of the reactions to...Ch. 13 - Consider the reaction AB The rate of the reaction...Ch. 13 - Cyclobutane decomposes to ethylene according to...Ch. 13 - The following gas-phase reaction was studied at...Ch. 13 - Prob. 13.21QPCh. 13 - Prob. 13.22QPCh. 13 - Prob. 13.23QPCh. 13 - Prob. 13.24QPCh. 13 - What is the half-life of a compound if 75 percent...Ch. 13 - The thermal decomposition of phosphine (PH3) into...Ch. 13 - The rate constant for the second-order reaction...Ch. 13 - The rate constant for the second-order reaction...Ch. 13 - Consider the first-order reaction A B shown here....Ch. 13 - The reaction X Y shown here follows first-order...Ch. 13 - Define activation energy. What role does...Ch. 13 - Prob. 13.32QPCh. 13 - Prob. 13.33QPCh. 13 - Prob. 13.34QPCh. 13 - Sketch a potential energy versus reaction progress...Ch. 13 - Prob. 13.36QPCh. 13 - The diagram in (a) shows the plots of ln k versus...Ch. 13 - Given the same reactant concentrations, the...Ch. 13 - Some reactions are described as parallel in that...Ch. 13 - Variation of the rate constant with temperature...Ch. 13 - For the reaction NO(g)+O3(g)NO2(g)+O2(g) the...Ch. 13 - The rate constant of a first-order reaction is...Ch. 13 - The rate constants of some reactions double with...Ch. 13 - Prob. 13.44QPCh. 13 - Consider the second-order reaction...Ch. 13 - The rate at which tree crickets chirp is 2.0 102...Ch. 13 - Prob. 13.47QPCh. 13 - What do we mean by the mechanism of a reaction?...Ch. 13 - Classify each of the following elementary steps as...Ch. 13 - Reactions can be classified as unimolecular,...Ch. 13 - Determine the molecularity and write the rate law...Ch. 13 - What is the rate-determining step of a reaction?...Ch. 13 - The equation for the combustion of ethane (C2H6)...Ch. 13 - Specify which of the following species cannot be...Ch. 13 - The rate law for the reaction...Ch. 13 - For the reaction X2 + Y + Z XY + XZ it is found...Ch. 13 - Prob. 13.57QPCh. 13 - The rate law for the reaction...Ch. 13 - How does a catalyst increase the rate of a...Ch. 13 - What are the characteristics of a catalyst?Ch. 13 - A certain reaction is known to proceed slowly at...Ch. 13 - Distinguish between homogeneous catalysis and...Ch. 13 - Prob. 13.63QPCh. 13 - The concentrations of enzymes in cells are usually...Ch. 13 - The diagram shown here represents a two-step...Ch. 13 - Consider the following mechanism for the...Ch. 13 - The following diagrams represent the progress of...Ch. 13 - Prob. 13.68QPCh. 13 - Prob. 13.69QPCh. 13 - List four factors that influence the rate of a...Ch. 13 - Prob. 13.71QPCh. 13 - Prob. 13.72QPCh. 13 - Prob. 13.73QPCh. 13 - The following data were collected for the reaction...Ch. 13 - Prob. 13.75QPCh. 13 - The rate of the reaction...Ch. 13 - Which of the following equations best describes...Ch. 13 - Prob. 13.78QPCh. 13 - The bromination of acetone is acid-catalyzed:...Ch. 13 - The decomposition of N2O to N2 and O2 is a...Ch. 13 - The reaction S2O82+2I2SO42+I2 proceeds slowly in...Ch. 13 - Prob. 13.82QPCh. 13 - The integrated rate law for the zero-order...Ch. 13 - Prob. 13.84QPCh. 13 - Prob. 13.85QPCh. 13 - The diagrams here represent the reaction A + B C...Ch. 13 - Prob. 13.87QPCh. 13 - The rate law for the reaction 2NO2 (g) N2O4(g) is...Ch. 13 - Prob. 13.89QPCh. 13 - Prob. 13.90QPCh. 13 - Briefly comment on the effect of a catalyst on...Ch. 13 - When 6 g of granulated Zn is added to a solution...Ch. 13 - Prob. 13.93QPCh. 13 - A certain first-order reaction is 35.5 percent...Ch. 13 - The decomposition of dinitrogen pentoxide has been...Ch. 13 - The thermal decomposition of N2O5 obeys...Ch. 13 - Prob. 13.97QPCh. 13 - Prob. 13.99QPCh. 13 - Prob. 13.100QPCh. 13 - Prob. 13.101QPCh. 13 - Chlorine oxide (ClO), which plays an important...Ch. 13 - Prob. 13.103QPCh. 13 - Prob. 13.104QPCh. 13 - Prob. 13.105QPCh. 13 - Prob. 13.106QPCh. 13 - Prob. 13.107QPCh. 13 - Prob. 13.108QPCh. 13 - Prob. 13.109QPCh. 13 - Thallium(I) is oxidized by cerium(IV) as follows:...Ch. 13 - Prob. 13.111QPCh. 13 - Prob. 13.112QPCh. 13 - Prob. 13.113QPCh. 13 - Prob. 13.114QPCh. 13 - Strontium-90, a radioactive isotope, is a major...Ch. 13 - Prob. 13.117QPCh. 13 - Consider the following potential energy profile...Ch. 13 - Prob. 13.119QPCh. 13 - Prob. 13.120QPCh. 13 - Prob. 13.121QPCh. 13 - Prob. 13.122QPCh. 13 - Prob. 13.123QPCh. 13 - Prob. 13.124QPCh. 13 - Polyethylene is used in many items, including...Ch. 13 - Prob. 13.126QPCh. 13 - Prob. 13.127QPCh. 13 - Prob. 13.128QPCh. 13 - Prob. 13.129QPCh. 13 - Prob. 13.130QPCh. 13 - Prob. 13.131QPCh. 13 - A gas mixture containing CH3 fragments, C2H6...Ch. 13 - Prob. 13.133QPCh. 13 - The activation energy (Ea) for the reaction...Ch. 13 - The rate constants for the first-order...Ch. 13 - Prob. 13.136QPCh. 13 - An instructor performed a lecture demonstration of...Ch. 13 - Prob. 13.138QPCh. 13 - Is the rate constant (k) of a reaction more...Ch. 13 - Prob. 13.140QPCh. 13 - Prob. 13.141QPCh. 13 - Prob. 13.142QP
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