1. A. Factors Affecting Solubility
Temperature:
Pressure:
high P:
gases more soluble
high T:
solids more soluble
low T:
gases more soluble

2. similar IMAFs dissolve
A. Factors Affecting Solubility
Polarity:
“Like Dissolves Like”
similar IMAFs dissolve H H H C C C H C C C
C6H14 H H H
H2O
CCl4

3. A. Factors Affecting Solubility
Polar –Polar
Polar –Nonpolar
HO–CH2CH2–OH
C27H56

5. Solubility Curves 1) Highest solubility at 20oC? 30oC?
2) How many grams KClO3 at 70oC ?
3) Is 50 g of KCl at 50oC sat, unsat, or supersat?
30 g of NaCl at 30oC?

6. B. Rate of Dissolving Solids dissolve faster... more surface area
(small particle size)
1 gram of sugar solute
1 gram of sugar solute

7. B. Rate of Dissolving Solids dissolve faster... more surface area
(small particle size)
more stirring

8. B. Rate of Dissolving Solids dissolve faster... more surface area
(small particle size)
more stirring
high temp.

9. B. Rate of Dissolving Gases dissolve faster... no stirring
high pressure
low temp.

10. Quick Quiz! 1) Polar water molecules will NOT dissolve…
A) polar alcohol molecules
B) most ionic compounds
C) nonpolar fat molecules
D) partially ionized acetic acid molecules

11. Quick Quiz.
2) For a given substance, which of the following will NOT influence
how fast it dissolves?
A) temperature
B) amount of agitation
C) molar mass
D) size of the crystals

12. Quick Quiz. 3) The solubility of a gas in a solvent is affected by?
A) both temperature and pressure.
B) only pressure
C) only temperature
D) your face