1. (8th) Chapter 7-2 Cornell Notes
“Concentration and Solubility”

2. (8th) Chapter 7-2 Cornell Notes
Key Questions
1. How is concentration measured?
2. What factors affect the solubility of a substance?

3. (8th) Chapter 7-2 Cornell Notes
dilute solution-
concentrated solution-
solubility-
saturated solution-
unsaturated solution-
supersaturated solution-
Key Terms

4. (8th) Chapter 7-2 Cornell Notes
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Paragraph 1
concentration (ratio solute to solution):
amount of solute dissolved
in an amount of solvent;
dilute solution:
a little solute is dissolved in the solution;
concentrated solution:
a lot of solute is dissolved in the solution;
concentration changes when
add more solute or add/remove
solvent.

5. (8th) Chapter 7-2 Cornell Notes
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Paragraph 2
solubility:
measure of the amount of added solute at a given T;
saturated solution:
when no more solute dissolves;
unsaturated solution:
can still add more solute;
a physical property of a substance.

6. (8th) Chapter 7-2 Cornell Notes
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Paragraph 3
Factors affecting solubility:
pressure;
type of solvent;
temperature;
Note: in gases, higher pressure the more gas can dissolve.

7. (8th) Chapter 7-2 Cornell Notes
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Paragraph 4
sometimes solutions can’t form;
solute and solvent don’t mix (oil & water);
ionic/polar compounds dissolve in polar solvents;
nonpolar compounds don’t dissolve in polar solvents.

8. (8th) Chapter 7-2 Cornell Notes
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Paragraph 5
Usually solids dissolve better w/ higher T;
Usually gases don’t dissolve w/ higher T ;
solution dissolves more solute at higher T;
supersaturated solution more dissolved solute than used;
can remove extra solute w/ solute crystal.