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Read the following pages from your text book (p. 261-264)

Ch. 10.2 Principles of solubility. Read the following pages from your text book (p. 261-264). A. Definitions. Solution - homogeneous mixture. Solute - substance being dissolved. Solvent - present in greater amount. A. Definitions. Solute - KMnO 4. Solvent - H 2 O. B. Solvation.

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Read the following pages from your text book (p. 261-264)

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  1. Ch. 10.2 Principles of solubility Read the following pages from your text book(p. 261-264)

  2. A. Definitions • Solution - homogeneous mixture Solute - substance being dissolved Solvent - present in greater amount

  3. A. Definitions Solute - KMnO4 Solvent - H2O

  4. B. Solvation • Solvation – the process of dissolving solute particles are surrounded by solvent particles First... solute particles are separated and pulled into solution Then...

  5. - + - - + + acetic acid salt sugar B. Solvation Non- Electrolyte Weak Electrolyte Strong Electrolyte solute exists as ions and molecules solute exists as ions only solute exists as molecules only DISSOCIATION IONIZATION View animation online.

  6. NONPOLAR NONPOLAR POLAR POLAR B. Solvation “Like Dissolves Like”

  7. B. Solvation • Soap/Detergent • polar “head” with long nonpolar “tail” • dissolves nonpolar grease in polar water

  8. UNSATURATED SOLUTION more solute dissolves SATURATED SOLUTION no more solute dissolves SUPERSATURATED SOLUTION becomes unstable, crystals form C. Solubility concentration

  9. C. Solubility • Solubility • maximum grams of solute that will dissolve in 100 g of solvent at a given temperature • varies with temp • based on a saturated soln

  10. C. Solubility • Solubility Curve • shows the dependence of solubility on temperature

  11. C. Solubility • Solids are more soluble at... • high temperatures. • Gases are more soluble at... • low temperatures & • high pressures (Henry’s Law). • EX: nitrogen narcosis, the “bends,” soda

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