CHM02: GENERAL CHEMISTRY 2
Written Work
COURSE OUTCOME 4
Name: _________________________________
Section: _____________________
Date: ________________
General Instruction. Solved the problems using Matlab
 For the first part, make sure that the graphs are visible when submitted.
 Do NOT forget the section breaks as indicated on the
CHM02_WW04_Matlab_Examples word file.
 Make sure you have entered the codes correctly just like what is shown on the
example given on the word file: CHM02_WW04_Matlab_Examples.
 Extract as .PDF file and copy the codes in MS Word as shown in the video lecture on
MatLab activity for WW4.
 Use this format for your file names of the pdf & word submissions:
o Section_First&middle name initials,Surname
o e.g., IS101_JCDELACRUZ
o submit both the PDF of the output and Word file (.docx) of the codes in the
submission link given on Blackboard.
 Submit only 1 pdf output and 1 word file of the codes in the submission link.
Page 1 of 3
I.
For numbers 1-3: Determine the overall order and the rate constant of the chemical
equation using the given data.
1. Consider the reaction: 2 A → 2 B + C
Experiment
1
2
3
4
5
6
[A] (M)
8.23x10-3
6.74 x10-3
5.52 x10-3
4.52 x10-3
3.70 x10-3
3.03 x10-3
t (min.)
10
20
30
40
50
60
a) Order of the reaction:
b) Rate constant:
2. The following data were obtained for the decomposition of N2O5 in CCl4.
[N2O5], mol/L
1.46
1.09
0.89
0.72
0.54
t (s)
0
423
753
1116
1582
a) Order of the reaction:
b) Rate constant:
3. The following data were obtained from a study of the decomposition of HI.
[HI], mol/L
5.46
4.10
2.73
1.37
t (seconds)
0
250
500
750
a) Order of the reaction:
Page 2 of 3
b) Rate constant:
II.
For numbers 4 and 5: Determining of the Activation Energy and Frequency Factor (A)
4. Use the following information to determine the activation energy and the frequency
factor (A) for the reaction shown below:
A+B→ C+D
Temperature (K)
401
372
312
Rate Constant (L/mol.s)
0.196
0.119
0.339
a.) Activation Energy (Ea):
b.) Frequency factor (A):
5. Use the following information to determine the activation energy and the A for the
reaction shown below:
Temperature (K)
375
400
500
600
Rate Constant (s-1)
1.68x10-5
3.5x10-5
4.2x10-4
2.11x10-3
a.) Activation Energy (Ea):
b.) Frequency factor (A):
Page 3 of 3