Factors Affecting Solubility
Pressure -- Henry’s Law
- The solubility of a gas in a liquid is directly proportional to the gas pressure
- Sg ? Pg or Sg = kHPg (see kH on p 653)
Temperature and Gas Solubility -- Le Chatlier’s Principle
- the solubility of all gases decrease in water as the temperature increases
- the enthalpy of solution for all gases is negative
- Gas + liquid solvent ? saturated solution + heat
Temperature and Solid Solubility
- The solubility of most solids increase with increasing temperature (p655)