Lon-Capa



8th (final) HW assignment due Wednesday,
December 2 by 5 pm.
Quiz #6 due Wednesday, December 2 by 10
pm.
Exam and Practice Exam on website
1
Exam III




Thursday, December 3, 7:00-9:00 pm; rooms
are on the website (same as before).
Conflict: (12/3) 4:30-6:30 in 135 Mechanical
Engineering Bldg.; sign up in 367 NL
Conflict with conflict? Email me right away.
Review sessions:


Monday, 11/30 from 5-7 pm in 213 Greg
Wednesday, 12/2 from 6-7 pm in 1000 Lincoln
2
Remaining Lectures




Wednesday, December 2: review for Exam 3.
Friday, December 4: go over Exam 3.
Monday, December 7: review the semester;
discuss the final exam; revisit
demonstrations.
Wednesday, December 9: no lecture; office
hours in 367J Noyes Lab from 10am-12pm.
3
Catalyzed Pathways Have a
Lower Activation Energy
4
Catalyzed Pathways Have a
Lower Activation Energy
5
Chapter 15: 115
Consider the hypothetical reaction:
A + B + 2C  2D + 3E
In a study of this reaction, three
experiments were run at the same
temperature. The rate is defined as
–d[B]/dt.
Expt 1: [A]0 = 2.0 M, [C]0 = 1.0 M,
[B]0 = 1.0 x 10-3 M
Write the rate law for this reaction,
and calculate the rate constant.
[B]
Time (s)
(mol/L)
2.7 x 10-4 1.0 x 105
1.6 x 10-4 2.0 x 105
1.1 x 10-4 3.0 x 105
8.5 x 10-5 4.0 x 105
6.9 x 10-5 5.0 x 105
5.8 x 10-5 6.0 x 105
6
Chapter 15: 115
Consider the hypothetical reaction:
A + B + 2C  2D + 3E
In a study of this reaction, three
experiments were run at the same
temperature. The rate is defined as
–d[B]/dt.
Expt 2: [B]0 = 3.0 M, [C]0 = 1.0 M,
[A]0 = 1.0 x 10-2 M
Write the rate law for this reaction,
and calculate the rate constant.
[A]
Time (s)
(mol/L)
8.9 x 10-3
1.0
7.1 x 10-3
3.0
5.5 x 10-3
5.0
3.8 x 10-3
8.0
2.9 x 10-3
10.0
2.0 x 10-3
13.0
7
Chapter 15: 115
Consider the hypothetical reaction:
A + B + 2C  2D + 3E
In a study of this reaction, three
experiments were run at the same
temperature. The rate is defined as
–d[B]/dt.
Expt 3: [A]0 = 10.0 M, [B]0 = 5.0 M,
[C]0 = 5.0 x 10-1 M
Write the rate law for this reaction,
and calculate the rate constant.
[C]
(mol/L)
0.43
Time (s)
1.0 x 10-2
0.36
2.0 x 10-2
0.29
3.0 x 10-2
0.22
4.0 x 10-2
0.15
5.0 x 10-2
0.08
6.0 x 10-2
8
Chapter 15: #111

Good “summary” problem:





Integrated rate law
Pseudo-order
Using half-lives
Activation energy
Mechanisms
9