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Ch. 15 - 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

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## Ch. 15 - Solutions

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**Ch. 15 - 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**UNSATURATED SOLUTION**more solute dissolves SATURATED SOLUTION no more solute dissolves SUPERSATURATED SOLUTION becomes unstable, crystals form A. Concentration 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).

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