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Solubility (More)

Solubility (More). Factors affecting solubility. Polarity Pressure solids and liquids-little effect gases-significant effect Temperature solids and liquids-temperature ↑, solubility↑ gases –temperature ↑, solubility ↓. Water as a solvent.

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Solubility (More)

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  1. Solubility (More)

  2. Factors affecting solubility Polarity Pressure • solids and liquids-little effect • gases-significant effect Temperature • solids and liquids-temperature↑, solubility↑ • gases –temperature ↑, solubility ↓

  3. Water as a solvent dissolves many substances because of its chemistry polar covalent bond / polar molecule Hydration--process in which a salt “falls apart” in water • partial positive (d+) charge on hydrogen is attracted to negative anions • partial negative (d-) charge on oxygen is attracted to positive cations

  4. Hydration

  5. ‘Like dissolves like” Polar solute dissolves in polar solvent Nonpolar solute dissolves in nonpolar solvent Which solvent would be the best for dissolving grease C20H42? Water or hexane? Which solvent would be best for dissolving KI? Water or hexane?

  6. Miscible- where two liquids mix so well the molecules fit into each other. • EX. 5 mL of water and 5 mL of alcohol = _____ mL • Immiscible- where two liquids do not mix • EX. Oil and water

  7. Reactions • sodium sulfide + nickel (II) sulfate  • lead II nitrate + potassium chloride  • iron II sulfate + sodium acetate 

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