Physical chemistry Test 1

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  1. Work Formula
    F*dl
  2. Work Units
    kg m^2/s^2
  3. Kinetic Energy
    .5 mu^2
  4. Relatino betwene work and energy
    w = E_kf-E_ki
  5. Kinetic Energy
    Energy posessed by a body by virtue of being in mostion
  6. Potential ENergy
    Energy posessed by a body by virtue of position
  7. System
    A specific segmentof hte world with deffinite boundaries on which we focus our attention
  8. Surroundings
    The part of the world immediately surrounding a system
  9. Universe
    System and its surroundings
  10. Open system
    Can transfer heat and material
  11. Closed system
    Can only transfer heat
  12. Isolated system
    Can transfer neither heat nor matter
  13. Intensive property
    Not a function of quantity
  14. Extensive propety
    Directly a function of quantity
  15. Equation of state
    An equation that describes the condition of a system as a function of intensive properties
  16. Equilibrium
    The systems variables of state are not changing with respect to time
  17. Heat
    The kinetic energy of molecualr motion
  18. Zeroeth law of thermodynamics
    • If A and B are in thermal equilibrium
    • And B and C are in thermal Equilibrium
    • Then A and C are in thermal Equilibrium
  19. Boyles Law
    Applies under Isothermic Conditrions. If temperature and nubmer of mols are held constant then PV=Constant
  20. Isotherm
    Temperature is held constant
  21. Isobaric
    Pressure is held constant
  22. Gay-Lussacks Law
    If Pressure and mols are fixed then V/T =Constant
  23. m is?
    mass
  24. M is?
    Molar Mass
  25. Ideal Gas Law
    PV=nRT
  26. 3 Assumptions of ideal gas law
    • 1) gas is assumed to be composed of individual particles whose actual dimensions are small in comparison to the distance between them.
    • 2) These particles are in constant motion and therefore have kinetic energy.
    • 3) Neither attractive nor repulsive forces exist between the particles.
  27. N
    Number of molecules present
  28. Pressure in terms of mean square speed
    P=
  29. Average Kinetic Energy of a molecule in a system
    e=.
  30. Partial Pressure
    Pressure exerted by a single component of a gas mixture. Defined by molar fraction* pressure total
  31. Grahms law of Effucsion
    R
  32. Collision frequency
    • How many collisions pe second does a molecule experieince
    • units : 1/s
  33. Collision Density
    • How many colisions per unit of second per volume occur?
  34. Mean free path
    • How far a molecule travels before a collision
    • distnace
  35. ump
    Most probable velocity. Peak of maxwell curve
  36. z
    • Compression factor
    • =
  37. z>1
    Repulsive forces dominate (b term from nonideal gas)
  38. Z<1
    Attractive forces dominate (a term)
  39. Van Der Waals equation
    Uses a to account for attraction and b to account for repulsion

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Author:
 Anonymous
ID:
 132761
Filename:
 Physical chemistry Test 1
Updated:
2012-02-04 08:35:47
Tags:
physics chemistry engineering
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Physical chemistry test 1
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