16.1. Solubility http://www.ck12.org
FIGURE 16.4
Answer:
Another familiar example is the mixing of vinegar and olive oil. Olive oil is a nonpolar substance, while vinegar
(which is mostly water and acetic acid) is polar. The result is a heterogeneous mixture that exhibits a bilayer.
Nonpolar-Nonpolar Interactions
Nonpolar-nonpolar interactions occur when two nonpolar liquids are mixed. An example of this is the interaction
between toluene and octane (seeFigures16.4 and 16.5). The interactions between a molecule of toluene and a
molecule of octane are relatively weak, but so are the toluene-toluene and octane-octane interactions. Because
no strong intermolecular forces (like those between water molecules) need to be broken for mixing to occur, no
strong interactions need to be formed in order for mixing to be a favorable process. Toluene and octane will form
a homogeneous mixture. The phrase "like dissolves like" applies to these mixtures as well. In this case, nonpolar
dissolves nonpolar.
FIGURE 16.5
Example 16.3
Can you think of another example of a nonpolar-nonpolar interaction between two different liquids that form a
homogeneous mixture?
Answer:
Another example of a nonpolar-nonpolar interaction between two different liquids would be the mixing of motor oil