Name:__________________________Hour:_______
Solutions: How is the solubility of a compound determined?
Virtual Lab Report Outline
Go to my website and click on the link for this document. Then find the virtual lab here:
http://www.glencoe.com/sites/common_assets/science/virtual_labs/PS15/PS15.html
Hypothesis
I predict that if the temperature of a solvent increases then the maximum amount of solute
that will dissolve will increase / decrease / or stay the same because
Variables
The manipulated variable is
The responding variable is
The control will not
The constants are
Data Table
Temperature
Temperature Vs. Mass Dissolved
Mass Dissolved (g)
NH4Cl
Ba(OH)2
CuSO4
0 ºC
20 ºC
60 ºC
100 ºC
Line Graph
Temperature Vs. Avg. Mass Dissolved
KCl
NaNO3
Results
The results demonstrate if the temperature of a solvent increases then the maximum amount
of solute that will dissolve will increase / decrease / or stay the same as shown by the
following data:
NH4Cl increased from _____ g at 0º to _____ g at 100º,
Ba(OH)2 increased from ____ g at 0º to ____ g at 100º,
CuSO4 increased from ____ g at 0º to ____ g at 100º,
KCl increased from ____ g at 0º to ____ g at 100º
and NaNO3 increased from ____ g at 0º to ____ g at 100º.
Conclusion
I predicted that if the temperature of a solvent increases then the maximum amount of solute
that will dissolve will increase / decrease / or stay the same. The data supports / fails to
support my hypothesis because when the temperature increased by ________ ºC the
maximum amount of solute that dissolved increased / decreased by ________ g OR stayed
the same.
Apply
1. When the temperature of the solute increases the particles of the solute move faster /
slower / at the same speed.
2. Is solubility a physical property? Justify your answer.
3. Can solubility be used to help identify a substance? Justify your answer.
4. Does mass change the physical property of a substance?
5. Does volume change the physical property of a substance?
6. Based upon the solubility determined in this virtual lab, how many grams of NH4Cl
should dissolve in 1 ml of water at 20ºC? Show your work!
7. Based upon the solubility determined in this virtual lab, how many grams of NH4Cl
should dissolve in 200 ml of water at 20ºC? Show your work!
Solutions: How is the solubility of a compound determined?
Virtual Lab Report Outline
Open NAL on your desktop. Open "Glencoe Physical Science" virtual labs. Open virtual
lab.
Problem
If the temperature of a solvent increases then will the maximum amount of solute that will
dissolve increase / decrease / or stay the same?
Hypothesis
I predict if . . .
then . . . will increase / decrease / or stay the same because . . .
Variables
 Independent variable is . . .
 Dependent variable is . . .
 Control variable is . . .
 Constant variables are . . . (Identify and list at least 3)
Experiment
Test hypothesis in an experiment & record data in a data table (title, labels, units)
Data Analysis
Analyze data by averaging trials and then graphing averages.
Results
The results demonstrate if . . . then . . . as shown by the following data: . . . avg. #,
avg. #, . . . avg. #.
...
Conclusion
I predicted if . . . then . . .
The data supports / fails to support my hypothesis because when the independent variable
increased / decreased by # the dependent variable increased / decreased by #
OR stayed the same.
Apply Questions
1. When the temperature of the solute increases the particles of the solute move faster /
slower / at the same speed.
2. Is solubility a physical property? Justify your answer.
3. Can solubility be used to help identify a substance? Justify your answer.
4. Does mass change the physical property of a substance?
5. Does volume change the physical property of a substance?
6. Based upon the solubility determined in this virtual lab, how many grams of NH4Cl
should dissolve in 1 ml of water at 20ºC? Show your work!
7. Based upon the solubility determined in this virtual lab, how many grams of NH4Cl
should dissolve in 200 ml of water at 20ºC? Show your work!