Chem 1160 Chapter 12

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zzto
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168286
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Chem 1160 Chapter 12
Updated:
2012-09-07 08:48:28
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Chem 1160 Chapter 12 ECU
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Chemistry flashcards for chapter 12 at ECU
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  1. 1
  2. there is usually a ----- to the solubility of one substance in another
    limit
  3. gases are --------- soluble in each other
    always
  4. two liquids that are mutually soluble are said to be --------
    • miscible
    • alcohol and water are miscible
    • oil and water are immiscible
  5. the maximum amount of solute that can be dissolved in a given amount of solvent is called the
    solubility
  6. the solubility of one substance in another varies with
    temperature and pressure
  7. When a solute dissolves in a solvent, solute-solute interactions and solvent-solvent interactions are being replaced with-----------.  The forces must be----------- in order to have a solution occur.
    • solute-solvent interactions
    • comparable in strength
  8. Substances with --------- types of intermolecular forces dissolve in each other.
    • similar
    • like dissolves like
  9. Predict which solvent will dissolve more of the given solute
    (a)  Sodium chloride in methanol (CH3OH) or in propanol (CH3CH2CH2OH)
    (a)  Methanol - NaCl is ionic and will form ion-dipoles with the -OH groups of both methanol and propanol.  However, propanol is subject to the dispersion forces to a greater extent.
  10. Predict which solvent will dissolve more of the given solute
  11. Predict which solvent will dissolve more of the given solute
  12. NEW CARDS START HERE
  13. Solvation of ions by water - endo or exo?
    always exothermic
  14. Delta H hydr is related to the charge density of the ion, that is, -------- and ------- matter.
    coulombic charge and size
  15. Lattice energy is the DH involved in the formation of
    an ionic solid from its gaseous ions.
  16. Most hydrocarbons are polar/nonpolar
    nonpolar
  17. Are gases very soluble in water,
    no
  18. The solubility of a gas (Sgas) is directly proportional to the
    partial pressure of the gas (Pgas) above the solution.
  19. the solubility of a gas (Sgas) is directly proportional to its partial pressure, (Pgas)
    Sgas = kHPgas
    kH is called
    Henry’s Law Constant
  20. Molarity (M)
    mol of solute/L of solution
  21. Molaity (m)
    mol of solute/kg of solvent
  22. parts by mass
    mass of solute/mass of solution
  23. To convert a term based on mass to one based on volume, you need the ----------  Working with the mass of a solution and the density (mass/volume), you can obtain volume from mass and
    • solution density.
    • mass from volume
  24. Molality involves quantity of ---------, whereas the other concentration terms involve quantity of ------------
    • 1solvent
    • 2solution.
  25. Ice is more/less dense than water
    less
  26. Remember the freezing point will likely
    be
    negative
  27. Osmotic pressure
    the symbol is pie, learn the equation

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