Name: JP Torack
Room # 310A
Student ID: 509105
Lab Section Letter:
1
A
All the information below must be saved and submitted to Gradescope by the time listed in the
syllabus. Each missing or incomplete item will receive a 2-point deduction.
EXPERIMENT 7: COMPARING STRENGTHS OF OXIDIZING/REDUCING AGENTS
(Optional) Additional data you feel important enough to record in the ELN for future reference
Expand Your Horizons (Page 154)
1. Record the identities and appearances of the chemicals inside each vial in the
“Expand your Horizons” tray. Conclude if a redox reaction occurred in the vials
containing a metal immersed in a solution of other metal ions. Fill in the table according
to your experimental observations.
Vial
A
B
C
Identity
0.3 M ZnSO4
0.3 M CuSO4
0.3 M CoSO4
D
0.4 g Cu Metal in A
E
0.4 g Cu metal in C
F
0.4 g Zn metal in B
G
0.4 g Zn metal in C
H
Copper Metal
Signature: JP Torack
Appearance
Clear Liquid
Blue Liquid
Red Liquid
Cloudy, clear solution
with chunks at bottom
Cloudy red solution
Clear solution with
large solids at bottom
Lighter red liquid with
chunks at bottom
Small Chunks of
Copper
Redox? Yes/No/NA
N/A
N/A
N/A
Yes
Yes
Yes
Yes
N/A
Time Stamp: 10/31/23 10:13:09 AM
Signature must be completed ON EACH PAGE (an electronic signature is fine). Your signature
verifies that this is unaltered data you obtained personally and independently during the lab
period. Altering or fabricating data is a violation of the Academic Integrity policy.
Name: JP Torack
Room # 310A
2
Student ID: 509105
Lab Section Letter:
A
All the information below must be saved and submitted to Gradescope by the time listed in the
syllabus. Each missing or incomplete item will receive a 2-point deduction.
EXPERIMENT 7: COMPARING STRENGTHS OF OXIDIZING/REDUCING AGENTS
Part A: Permanganate as an Oxidizing Agent:
2. Record the appearances and colors of the contents in test tubes A, B, and C in step 2. Record
your observations of the color changes in steps 3 and 4, and the final appearances of the test
tube contents. Fill in the table according to your experimental observations.
Test Tube
Color in step 2
A
Redder Purple
B
Purple
C
Purple
3. Which test tube changed color
last
Color change step 3
Color change after
10 minutes
Color change step 4
Yellow-orange
None
Dark Brown
B
clear
clear
Dark green
clear
clear
brown
Part B: Preparation and Extraction of Halogens:
4. Record the colors of all the reactants, the color of the solution before adding heptane, the
colors of the heptane and aqueous layers after mixing. Identify the substance that was
extracted into the heptane. Fill in the table according to your experimental observations.
Solution
Color of
reactants before
mixing
Color of
solution
before adding
heptane
Color of
heptane
layer after
mixing
Color of
aqueous
layer after
mixing
Substance
extracted into
heptane
Cl-heptane
HCl: clear
Bleach: faint
yellow
Faint Yellow
Faint yellow
Faint yellow
Cl
Signature: JP Torack
Time Stamp: 10/31/23 10:13:09 AM
Signature must be completed ON EACH PAGE (an electronic signature is fine). Your signature
verifies that this is unaltered data you obtained personally and independently during the lab
period. Altering or fabricating data is a violation of the Academic Integrity policy.
Name: JP Torack
Room # 310A
Student ID: 509105
Lab Section Letter:
3
A
All the information below must be saved and submitted to Gradescope by the time listed in the
syllabus. Each missing or incomplete item will receive a 2-point deduction.
EXPERIMENT 7: COMPARING STRENGTHS OF OXIDIZING/REDUCING AGENTS
Br-heptane
NaBr: clear
NaBrO3: clear
H2SO4: clear
Orange
Dark orange
orange
I-heptane
KI3: amber
orange
violet
orange
Br
I
Part C: Relative Strengths of Oxidizing Agents and Reducing Agents
5. All colors in the aqueous and heptane layers observed in Part C and your conclusions as to
whether redox reactions occurred (yes or no). Fill in the table according to your experimental
observations.
Reactants
Heptane Layer
Aqueous Layer
Redox Reaction?
KI + Cl2
violet
Dark orange
yes
KI + Br2
red
yellow
yes
NaBr + Cl2
Faint yellow
Dark yellow
yes
NaBr + I2
violet
clear
no
NaCl + I2
violet
Clear
no
NaCl + Br2
orange
clear
No
NaCl + KMnO4
Claer
violet
No
NaBr + KMnO4
Light oragnge/Yellow yellow
Yes
Very Light purple,
I2 + Na2S2O5
clear
yes
almost clear
Procedural Changes and Notes
If you performed a step multiple times, performed a smaller-scale version of a part of the
experiment, or made any other modifications, record them here. An example is shown for you
on the first line. Add additional lines if needed.
Procedure
Step #
Signature: JP Torack
Description of Modification
Observations
Time Stamp: 10/31/23 10:13:09 AM
Signature must be completed ON EACH PAGE (an electronic signature is fine). Your signature
verifies that this is unaltered data you obtained personally and independently during the lab
period. Altering or fabricating data is a violation of the Academic Integrity policy.
Name: JP Torack
Room # 310A
Student ID: 509105
Lab Section Letter:
4
A
All the information below must be saved and submitted to Gradescope by the time listed in the
syllabus. Each missing or incomplete item will receive a 2-point deduction.
EXPERIMENT 7: COMPARING STRENGTHS OF OXIDIZING/REDUCING AGENTS
Signature: JP Torack
Time Stamp: 10/31/23 10:13:09 AM
Signature must be completed ON EACH PAGE (an electronic signature is fine). Your signature
verifies that this is unaltered data you obtained personally and independently during the lab
period. Altering or fabricating data is a violation of the Academic Integrity policy.