Saturated Solutions: Measuring
Solubility
By: Student
Room: 201,7th grade
11-29-11
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Student
Saturated solutions: Measuring Solubility
Table of Contents
Table of Contents ……………………………………………….i
Abstract …………………………………………………………1
Safety Sheet …………………………………………………….2
Acknowledgements …………………………………………… 3
Purpose ……………………………………………………….…. 4
Hypothesis ……………………………………………………….. 5
Materials ………………………………………………………. 6
Methods of Procedure ……………………………………… 7
Results ………………………………………………………. 8
Conclusions ………………………………………………… 10
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Student
Saturated solutions: Measuring Solubility
Acknowledgements
I would like to acknowledge my two older brothers,
Ivan and Angel. They both helped me in a way with this
project. Ivan took me to the stores to get the things I needed
for the project. Now Angel helped me make the graph for the
results, since my computer couldn’t make a graph.
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Student
Saturated solutions: Measuring Solubility
Purpose
The purpose of this experiment is to measure the solubility of
household chemicals.
I became interested in this experiment when in this
experiment when in class we measured solvents.
The information gained from this experiment would help me
understand regular, everyday solutes.
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Student
Saturated solutions: Measuring Solubility
Hypothesis
I’m sure that sugar has the most solubility of the household items,
the solvent or the distilled water could have effects on the solute.
Since we use sugar in our coffee, tea, or any other liquid we drink.
We never really realize about the solute we put in our drinks, like
we never see or even feel the solute. Now the Epsom salt is
probably a lot less since its large in size out of the items. This
would have the solubility less. So for the table salt it has a slight
size enlargement.
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Student
Saturated solutions: Measuring Solubility
Materials
 Distilled Water
 Metric liquid cup (graduated cylinder)
 Three clean jars
 Non iodized table salt
 Epsom Salt
 Sugar
 Plastic spoons
 Pencil
 Journal
 Three shallow plates or saucers
 Oven (to put the saucer into)
 Electric kitchen balance (that measures grams)
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Student
Saturated solutions: Measuring Solubility
Methods of Procedure
1. Get all the materials you need.
2. Now pour 100ml of distilled.
3. Use the kitchen balance to weigh the amount below to
test.
A. 50g Non-iodized table salt
B. 50g Epsom salt
C. 250g Sugar
4. Pour some of the solute into the distilled water.
5. Keep placing more and more of the solute until it won’t
dissolve anymore.
6. Now weigh the rest of the solute and see how much you
lost, and record it.
7. Label the underside of each saucer that the solution will
go to.
8. Before anything weigh the saucer and record it.
9. Pour 10- 15ml of the solution in the saucer.
10. Weigh the plate + solution and record it in your
journal.
11. Do steps 8-10 for each saturated solution.
12. Put plate in oven on low heat.
13. After all the water has evaporated weigh it and record
it plate + crystal.
(Hint: Do the experiment multiple times so you get right
amount)
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Student
Saturated solutions: Measuring Solubility
Results
Trial 1
Solute
Solute left
Sugar
145.15g
Table Salt
18.144g
Epsom Salt
9.072g
Average
57.455g
Plate
752.963g
412.769g
263.084g
476.272g
Plate + crystal
766.57g
417.30g
264.08g
482.65g
Plate + solution
771.107g
426.377g
281.227g
492.903g
Trial 2
Solute
Solute left
Sugar
158.76g
Table Salt
18.144g
Epsom Salt
9.0718g
Average
61.991g
Plate
752.963g
412.769g
263.084g
476.272g
Plate + crystal
766.57g
417.30g
263.08g
482.31g
Plate + solution
780.18g
426.38g
276.69g
494.41g
Trial 3
Solute
Solute left
Sugar
149.69g
Table Salt
18.144g
Epsom Salt
9.062g
Average
61.988g
Plate
752.963g
412.769g
263.084g
476.272g
plate + crystal
762.04g
417.30g
263.08g
480.806g
Plate + solution
771.11g
426.368g
271.78g
489.75g
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Student
Saturated solutions: Measuring Solubility
Conclusion
The data in this experiment has proven that my
hypothesis was wrong. Actually Epsom salt had the most
solubility of the three, and sugar my guess was with the least.
Like it shows in the table and graph that the smaller amount
you have the more solubility it has. Now you might be saying
that sugar has the most solubility but it doesn’t since we put
250g of sugar we have to scale down. So that it can be
compared with the others. The plate and solution was to
compare the after results or, plate and crystal.
Possible errors that this experiment could have are
actually vital. Like in the experiment, when I put the solution
and the plate in the oven in one of my trials it burned when I
took it out. Adding time to how long the solution should stay
in the oven would give even more accurate results. So you
know that it didn’t lose more weigh than the others. Or like the
fact that it doesn’t tell how it looks like when you have found
the solubility.
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I have definitely learned a lot from this project. Like
sugar not having a great amount of solubility. Or like the size
of the solute doesn’t matter it counts on the solubility. But if
the project were to go on I would use different solvents like tab
water. So if it also depended on the solvent we used. The
highest solubility was Epsom salt and the least solubility was
the sugar which probably absorbs the water so it comes to be
smaller.
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Student
Saturated solutions: Measuring Solubility
Safety
Be careful when you’re touching the oven it can get
hot. Get help by an adult when you’re turning on the oven
and turning it off. Also note that the water like Epsom can be
dangerous if eaten.
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