Solubility

•Solubility:

 Concentration of a solute in a saturated solution at a given temperature

•Saturated Solution:

 When a solvent at a certain temperature has dissolved all of the solute that it can

•Supersaturated Solution-- Crystallization

The solubility of a pure chemical substance at a given temperature and pressure is constant (USP, Merck)--However, its RATE of Solution depends on the particle size of the substance and the extent of agitation

•Solubility given usually as “1 gram in X ml” of water, alcohol, etc.

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•Solution which contains all the solute that can be dissolved at a particular temperature

•Increasing the temperature increases the amount of solute a given solution can hold

•Lowering temperature decreases solubility (of most solutes)

•Excess solute falls to the bottom of the container as a precipitate (a solid in contact with the solution)