Ch. 15 - Solutions II. Solubility & Concentration.

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Presentation transcript:

Ch Solutions II. Solubility & Concentration

A. Concentration  Concentrated solution large amount of solute  Dilute solution small amount of solute

A. Concentration  % by Volume usu. liquid in liquid EX: 10% juice = 10mL juice + 90mL water  % by Mass usu. solid in liquid EX: 20% NaCl = 20g NaCl + 80g water

A. Concentration SATURATED SOLUTION no more solute dissolves UNSATURATED SOLUTION more solute dissolves SUPERSATURATED SOLUTION becomes unstable, crystals form concentration

B. Solubility  Solubility maximum grams of solute that will dissolve in 100 g of solvent at a given temperature varies with temperature based on a saturated solution

B. Solubility  Solubility Curve shows the dependence of solubility on temperature

B. Solubility  Solids are more soluble at... high temperatures.  Gases are more soluble at... low temperatures. high pressures (Henry’s Law).