Chemistry Chapter 12 pt 2

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Author:
misol
ID:
306874
Filename:
Chemistry Chapter 12 pt 2
Updated:
2015-08-26 21:08:08
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Wake Tech 152 chemistry
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wake tech chemistry 152 chapter 12
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  1. Vapor Pressure
    Depends on IMF
  2. Vaporization
    when surface molecules get enough energy and escape to the gas phase
  3. Vapor pressure increases until...
    • evaporation rate equals condensation rate 
    • (dynamic equilibrium)
  4. 1 atm
    760 mmHg
  5. Boiling Point
    temperature at which vapor pressure equals atmospheric pressure
  6. The Clausius Clapeyron Equation
    relates ln of pressure and the reciprocal of absolute temp 

    lnP=deltaHvap/RT +C
  7. Melting Point
    temp at which energy of individual particles enable them to break free of their fixed position
  8. Phase Changes

    6 phaes
    • Evaporation
    • Condensation
    • Freezing
    • Melting
    • Sublimation - solid to gas
    • Deposition - gas to solid
  9. border lines between phase diagram
    conditions at which a substance exists as s,l,g
  10. critical temp and pressure
    end point of curve/temp for solid to be solid and liquid to stay liquid
  11. molar enthalpy of sublimation
    energy required to sublime 1 mole of a solid
  12. Crystalline Solids
    process rigid and long range order; its atoms; molecules; or ions occupy specific positions
  13. coordination number
    number of atoms surrounding an atom
  14. 3 types of cubic cells
    • primitive cubic 
    • body centered
    • face centered
  15. primitive/simple cubic
    • coordination number is 6
    • 1 atom/unit cell

    a= 2r
  16. body centered
    • one atom in the middle 
    • coordination number is 8 
    • 2 atoms/unit cell

  17. face centered
    • coordination number is 12 
    • (6 atoms, one per face)
    • 4 atoms/unit cell

  18. corner atom
    shared by 8 unit cells
  19. edge atom
    shared by 4 unit cells

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