1. Aim # 17: What are unsaturated, saturated, and supersaturated solutions?
H.W. # 17
Read p. 472 (sec. 15.2)
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Complete handout sheet
Do Now: A polar solvent will dissolve a polar solute. Which of the following gases should have a significant solubility in water?
a) N2 b) HCl c) O2 d) HCN e) NH3

2. I Saturated Solution- a solution that has as much solute as it can hold under existing conditions (temp. and amt. of solvent) Dynamic Equilibrium exists rate of dissolution=rate of crystallization

3. II Unsaturated Solution- a solution that contains less solute than it can hold at a given temperature.
III Supersaturated Solution- a solution that contains more solute than it normally holds at a given temperature.

4. IV Dilute Solution- a solution that contains a small amount of solute compared to the amount of solvent.
V Concentrated Solution- a solution that contains a large amount of solute compared to the amount of solvent.

5. Table G Solubility Curves

6. 22 g KClO3 = x g KClO3 100 g H2O 200 g H2O x = 44 g KClO3
VI Solving solubility problems What mass of KClO3 can be dissolved in 200 g H2O at 500C?
22 g KClO3 = x g KClO g H2O g H2O
x = 44 g KClO3
2. If the temperature is raised to 800C, what mass of KClO3 would have to be added to form a saturated solution once again?
88g – 44g = 44g KClO3

7. At 660C, solubility KClO3 = 33g KClO3 100 g H20 = 66 g KClO3/200g
3. If the solution is now cooled to 660C, approximately how much KClO3 would precipitate from the solution?
At 660C, solubility KClO3 = 33g KClO g H20
= 66 g KClO3/200g
you would precipitate
88 g -66 g = 22g KClO3