Chemistry Chpt.15

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Author:
TheBob
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212582
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Chemistry Chpt.15
Updated:
2013-04-10 00:13:07
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chemistry
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Description:
Mainly vocab from chpt. 15, with a few questions.
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  1. Solution
    A homogeneous mixture in which the components are uniformly intermingled.
  2. Solvent
    The dissolving medium in a solution; the substance present in the largest amount.
  3. Solute
    The substance dissolved in the solvent to make a solution.
  4. Aqueous solution
    A solution with water as a solvent.
  5. Saturated
    Describes a solution that contains as much solute as will dissolve  at that temperature.
  6. Unsaturated
    Describes a solution in which more solute can dissolve than is dissolved already at that temperature.
  7. Supersaturated
    Describes a solution that contains more solute than a saturated solution will hold at that temperature.
  8. Concentrated
    Describes a solution in which a relatively large amount of solute is dissolved in a solution.
  9. Dilute
    Describes a solution in which a relatively small amount of solute is dissolved in a solution.
  10. Mass percent
    A way of describing a solution's composition which expresses  the mass of solute present in a given mass of solution. 

    Mass percent= (Mass of solute/mass of solution)x100%=(grams of solute/[grams of solute+grams of solvent])x100%
  11. Molarity (M)
    Describes the amount of solute in moles and the volume of the solution in liters. 

    M=moles of solute/liters of solution 

    M=mol/L
  12. Standard solution
    A solution whose concentration is accurately known.
  13. dilution
    The process of adding more solvent to a solution.
  14. Neutralization reaction
    An acid-base reaction.
  15. Equivalent of an acid
    amount of the acid that can furnish one mole of hydrogen ions (H+).
  16. Equivalent of a base
    The amount of base that can furnish one mole of hydroxide ions (OH-).
  17. Equivalent weight
    The mass (in grams) of on one equivalent of an acid or a base.
  18. Colligative property
    A property that is dependent only on the number of solute particles present in solution.
  19. Substances with similar polarities tend to dissolve with each other to form a _____.
    Solution
  20. Water is a very ____ substance and tend to dissolve ______ solids or other _______ substances.
    polar; ionic; polar
  21. The rate of dissolution is affected by:
    • -Surface area of solute
    • -Stirring
    • -Temperature
  22. Dilution of a solution occurs when...
    ...additional solvent is added to lower the concentration of a solution.
  23. Mol=
    Mol=(concentration)(volume)
  24. The properties of a solvent are affected by...
    ...dissolving a solute.
  25. The boiling point of a solvent increases as the amount of...
    ...dissolved solute increases.
  26. The melting point of a solvent decreases as the amount of dissolved solute _____.
    increases
  27. How does an ionic solute dissolve in water?
    The strong ionic forces are overcome by the strong attractions between the ions and the polar water molecules. It breaks off into INDIVIDUAL cations and anions.
  28. Normality (N)
    The number of equivalents of solute per liter of solution. 

    N=equiv/L

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