7.1.3

Ideal Gas Law

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Ideal Gas Law

The ideal gas law is a good model for the behaviours of large amounts of gas.

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Ideal gas law

  • The ideal gas law can be written as:
    • Pressure x volume = number of moles x ideal gas constant x temperature
    • pV=nRT
      • Where R is the ideal gas constant and has a value of 8.31
  • This equation can be rearranged to solve for any of the terms.
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Boltzmann constant

  • Ideal gas constant x number of moles = Boltzmann constant x number of molecules
    • Rn=kNRn=kN
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Avogadro's number

  • This equation gives the relationship between the ideal gas constant, the Boltzmann constant and Avogadro's number (the number of molecules in a mole):
    • Na=R/kN{_a}=R/k
  • Using the ideal gas law and the above equation, we can now write:
    • pV=NkTpV=NkT

Jump to other topics

1Physical Quantities & Units

2Measurement Techniques

3Kinematics

4Dynamics

5Gravitational Fields

6Deformation of Solids

7Thermal Physics

8Oscillations

9Communication

10Electric Fields

11Current Electricity

12Magnetic Fields

13Modern Physics

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