I.
13.2 - Types of Solution and Solubility
A. Aqueous Solutions - water is the solvent
B. A solvent will not dissolve all solutes
1. Ex water and grease
C. The solubility of a substance is the amount of substance that it can dissolve in a
given amount of solvent
1. Depends in IMF
D. Many systems want to have lower potential energy
1. Doesn’t necessarily apply to solutions
E. Tendency to mix is b/c of entropy
1. Entropy is a measure of energy randomization or energy dispersal in a
system
F. Effect of IMF
1. IMF can either promote or withhold the formation of a solution
2. IMF can exist b/w solute particles, b/w solvent particles, and b/w solute
and solvent particles
3. Reminder of IMF
(1) Dispersion Forces
(2) Dipole Dipole
(3) Hydrogen Bond
(4) Ion Dipole
4. Like dissolves like
a) Polar solvents, like water, tend to dissolve polar or ionic solutes
b) Nonpolar solvents, like hexane tend to dissolve nonpolar solutes
c) Similar dissolves similar
G. Solubility often increase with temperature
H.