Lecture16222
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Lecture16222

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Lecture16222 Lecture16222 Presentation Transcript

  • The Properties of Mixtures: Types of Solutions Lecture 16
  • Mixtures everywhere. There are a lot of living mixtures.
  • Substances with similar type of intermolecular forces dissolve in each other. Like dissolves like. Similia similibus solvuntur .
  • Solubility (S) is the maximum amount of solute that dissolves in a fixed quantity of a particular solvent at a specified temperature, given the excess solute is present.
  • Saturated solution
  • Solutions can be dilute and concentrated. These are relative notions.
  • Intermolecular forces in solutions
    • Ion-dipole;
    • Hydrogen bonding;
    • Dipole-dipole;
    • Ion — induced dipole.
    • Dipole — induced dipole.
    • Dispersion (London).
  • Major types of forces in solutions
  • Hydration shells around an ion
  • Besides liquid solutions, there are
    • Gas-gas solutions;
    • Gas-solid solutions;
    • Solid-solid solutions.
  • In substitutional alloys atoms of another element substitute for some atoms of the main element in the structure.
  • In substitutional alloys atoms of another element substitute for some atoms of the main element in the structure.
  • Solubility of methanol in water
  • A sample problem on predicting solubilities of substances.
  • The two type of alloys
  • THE END