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 energy to the reaction (e.g. 2700 kJ of heat or electricity), would you be able to make the reaction reverse itself (i.e. have the products become reactants)? Justify your answer

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter13: Chemical Kinetics
Section: Chapter Questions
Problem 13.68QE
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Potential Energy (kJ)
1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction.
(i) Cl₂ (g) + Pt (s) → 2Cl (g) + Pt(s)
ΔΗ = - 950 kJ
ΔΗ = 575 kJ
(ii) Cl (g)+ CO (g) + Pt (s) → CICO (g) + Pt (s)
(iii) Cl (g) + CICO (g) → Cl₂CO (g)
AH = -825 kJ
2600
2400
2200
2000
1800
1600
1400
1200
1000
800
a. Draw the potential energy diagram for the reaction. Label the data points for clarity.
The potential energy of the reactants is 600 kJ
600
400
200
0
-200
-400
-600
-800
Ea = 1550 kJ
Ea = 2240 kJ
Ea = 2350 kJ
Reaction Progress
b. What is the overall chemical equation?
c. What is the overall change in enthalpy for the above chemical reaction?
Transcribed Image Text:Potential Energy (kJ) 1. Consider these three reactions as the elementary steps in the mechanism for a chemical reaction. (i) Cl₂ (g) + Pt (s) → 2Cl (g) + Pt(s) ΔΗ = - 950 kJ ΔΗ = 575 kJ (ii) Cl (g)+ CO (g) + Pt (s) → CICO (g) + Pt (s) (iii) Cl (g) + CICO (g) → Cl₂CO (g) AH = -825 kJ 2600 2400 2200 2000 1800 1600 1400 1200 1000 800 a. Draw the potential energy diagram for the reaction. Label the data points for clarity. The potential energy of the reactants is 600 kJ 600 400 200 0 -200 -400 -600 -800 Ea = 1550 kJ Ea = 2240 kJ Ea = 2350 kJ Reaction Progress 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 energy to the reaction (e.g. 2700 kJ of heat or electricity), would
you be able to make the reaction reverse itself (i.e. have the products become reactants)?
Justify your answer
Transcribed Image Text: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 energy to the reaction (e.g. 2700 kJ of heat or electricity), would you be able to make the reaction reverse itself (i.e. have the products become reactants)? Justify your answer
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