CHAPTER 7: EQUILIBRIUMS

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CHAPTER 7: EQUILIBRIUMS
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2011-12-08 20:11:59
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  1. closed system?
    exchanges energy but not matter
  2. dynamic equilibrium?
    balance between forward and reverse processes happening at the same rate
  3. forward reaction?
    left-to-right reaction
  4. reverse reaction?
    right-to-left reaction
  5. solubility equilibrium?
    dynamic equilibrium between a solute and a solvent
  6. phase equilibrium?
    dynamic equilibrium between different states of a pure substance
  7. chemical reaction equilibrium?
    dynamic equilibrium between reactants and products of a chemical reaction
  8. quantitative reaction?
    all the limiting reagent is consumed
  9. reversible reaction?
    can achieve equilibrium in both directions
  10. percent reaction?
    • actual product yield
    • ___________________ x100
    • theoretical product yield
  11. position of equilibrium when:
    NR
    REACTANTS FAVOURED
    PRODUCTS FAVOURED
    QUANTITATIVE
    • < 1%
    • < 50%
    • > 50%
    • > 99%
  12. equilibrium law expression?
    • aA + bB = cC + dD
    • ...
    • [C]c[D]d
    • _______ =K (equilibrium constant)
    • [A]a[B]b
  13. homogeneous equilibria?
    all entities are in the same phase
  14. heterogeneous equilibria?
    equilibria in which reactants and products are in more than one phase
  15. equilibrium shift?
    moving the system at equilibrium so theres a change in the concentrations of reactants and products
  16. solubility?
    maximum concentration of a solute in a solvent at a specific temperature

    (how much stuff is in the other stuff)
  17. solubility equilibrium law equation?

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