Pigment Proposal 1 v4
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University Of Arizona *
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151L
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Chemistry
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Jan 9, 2024
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1
Chemical Thinking
Pigment
Proposal 1
v4.1 |
Pigment
Proposal 1
Your name:
Louden Sundling
Your email:
Louden@arizona.edu
Your lab partner’s name(s):
Shane and Christian
Your lab partner’s email(s):
tatman@arizona.edu
Your lab instructor’s name:
Ambesh
Your lab section:
5k
All work must be
very neat
and
organized
. If you need to collect your thoughts, please use a separate sheet of paper. Proposals are a
group
effort
. Please submit the completed document as a PDF to the
Pigment Proposal 1
D2L DropBox before
the scheduled end of lab.
1. In a complete, well-written sentence, summarize in your own words the
overall goal(s)
for the
Pigment Project
.
The overall goal of the pigment project is to separate the different solutes of the lake pigment, inert binder, red
dye, orange dye, and blue dye, by using the four different solvents given, water, cyclohexane, acidic water, and
alkaline water.
2. In your own words, the
goal for this first session
of the
Pigment Project
is
…
The goal of the first session of the pigment project is to discover which solvents dissolve the different solutes and
which solvents don’t dissolve the different solutes. By doing this, we will be able to create a proposal which allows
us to use the four different solvents to separate the lake pigment into its four components.
3.
Pigment Component Solubility Exploration Results
. Clearly summarize the
key results
from your systematic exploration of
solubility for the four known candidate lake pigment components. You must identify each solvent by name (cyclohexane, acidic
water (1 M HCl), etc.), likewise name each dye (red dye, blue dye, etc.)
.
Table 1.
Known Candidate Pigment Component Solubility Observations
Component
Solvent:
Water
Solvent:
Acidic Water
Solvent:
Alkaline
Water
Solvent:
Cyclohexane
Dye Red:
Dissolved
Dissolved
Dissolved; a little
darker
Didn’t dissolve
Stayed on bottom
Dye Blue:
Dissolved
Dissolve
Didn’t dissolve
Stayed on top
Dissolve
Dye Orange:
Dissolved, but not
very well, there is
still orange dye
evident near the
top of the vial
Dissolved
Didn’t dissolve and
changed to a darker
orange color on top
of the liquid.
Dissolved
Inert Binder
Solute stayed at the
top immediately.
Solute eventually
dissolved.
Solute stayed at the
top. Solute did not
dissolve very well.
Solute stayed at the
top. Solute did not
dissolve very well.
Solute dropped to
the bottom of the
container
immediately. Solute
did not dissolve.
Addition Observations
:
Red Dye- everything dissolved it except for cyclohexane
Blue Dye- Everything dissolved it except for alkaline water.
CHEM 151 PPP1
v4.1
8-27-22
2
Chemical Thinking
Pigment
Proposal 1
v4.1 |
Orange Dye- Dissolved completely in both cyclohexane and acidic water, but didn’t dissolve very well in nano water
and it didn’t dissolve at all in the alkaline water.
CHEM 151 PPP1
v4.1
8-27-22
3
Chemical Thinking
Pigment
Proposal 1
v4.1 |
4.
Liquid-Liquid Extraction Exploration Results
. For
each
of the four known candidate lake pigment components
separately
explore where
most of the component resides
in the following liquid-liquid (two-solvent) extraction (separation) systems
:
Table 2.
Known Candidate Pigment Component Liquid-Liquid Extraction Solubility Observations
Component
Cyclohexane vs. NANOPure Water
Cyclohexane vs. 1 M NaOH
Cyclohexane vs. 1 M HCl
Dye Red:
Red dye mixed with water
and was separate from
cyclohexane.
Red dye mixed with alkaline
water but was separate from
cyclohexane.
Red dye mixed with acidic
water and was separate from
cyclohexane.
Dye Blue:
Blue dye dissolves more in
cyclohexane than it does in
Nanopure water.
Dye dissolved into the
poured in cyclohexane, but it
remained separated from
the alkaline water.
Dye dissolved better in the
cyclohexane than the acidic
water.
Dye Orange:
Orange dye dissolved in both
the cyclohexane and the
Nanopure water.
Orange dye dissolved as its
regular color in the
cyclohexane. After being
shaken up, the darkest
orange color was prevalent
in the alkaline water but it
was still light orange in the
Cyclohexane.
Orange dye dissolved as its
regular color in both the
cyclohexane and the acadic
water.
Inert Binder
Binder remained dissolved in
the Nano pure water, but it
was still separate from the
cyclohexane.
Binder was not dissolved in
the cyclohexane and it was
barely dissolved in the
alkaline water.
Binder was not dissolved in
the cyclohexane and it was
barely dissolved in the acid
water.
CHEM 151 PPP1
v4.1
8-27-22
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