AP Chemistry / Unit 3: Properties of Substances and Mixtures
3.10 Solubility
Notes
"Like dissolves like": polar solvents dissolve polar and ionic solutes; nonpolar dissolve nonpolar.
- Dissolving depends on the balance of solute-solute, solvent-solvent and solute-solvent attractions.
Practice
Which dissolves best in hexane (nonpolar)?
Nonpolar with nonpolar.
Why does NaCl dissolve in water?
Water stabilizes the ions.
Iodine ($\mathrm{I_2}$) is more soluble in $\mathrm{CCl_4}$ than in water because:
Like dissolves like.
Ready for more? Take the Unit 3 test.