Application: Chemical Kinetics 1) The graph below is a potential energy diagram for the hypothetical reaction: A + B C + D Potential energy (kJ) 100 90 80 70- 60 50 40 30 20- 10 0 A+B Reaction coordinate a. Is the forward reaction C+D endothermic or exothermic? Calculate the value of AH for this reaction. b. What is the value of the potential energy of the activated complex? c. Calculate the activation energy (EA) for the forward reaction.
Application: Chemical Kinetics 1) The graph below is a potential energy diagram for the hypothetical reaction: A + B C + D Potential energy (kJ) 100 90 80 70- 60 50 40 30 20- 10 0 A+B Reaction coordinate a. Is the forward reaction C+D endothermic or exothermic? Calculate the value of AH for this reaction. b. What is the value of the potential energy of the activated complex? c. Calculate the activation energy (EA) for the forward reaction.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter12: Chemical Equilibrium
Section: Chapter Questions
Problem 92QRT
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1
Potential energy (kJ)
100
66%
8889898
Application: Chemical Kinetics
1) The graph below is a potential energy
diagram for the hypothetical reaction:
A B C + D
+1
A+B
A
Reaction coordinate
C+D
→
a. Is the forward reaction
endothermic or exothermic?
Calculate the value of AH for this
reaction.
b. What is the value of the potential
energy of the activated complex?
c. Calculate the activation energy
(EA) for the forward reaction.
d. Draw a dashed line to show the
effect of adding a catalyst to the
system which decreases EA by 20
kJ.
e. Name 4 things that speed up a
reaction:
2) On the graph below, draw a potential
energy diagram for the following
reaction:
Q R S + T
given the following information:
PE of Q + R = 150 kJ
PE of S + T = 250 kJ
PE of the activated complex = 375 kJ
400
350
300
250
200
Potential energy (kJ)
०४ठ्ठठ
150
100
Reaction coordinate
a. Is the forward reaction
endothermic or exothermic?
Calculate the value of H for this
reaction.
b. Calculate the EA for the forward
reaction.
c. What is the total potential energy
content of the activated complex?
d. Draw a dashed line to show the
effect of adding a catalyst to the
system
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Calculate the value of triangle H for this reaction
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