Gas laws: temp/pressure changes

Physics, Monitoring, & Devices

Gas Laws: temperature/pressure changes

PV=NRT

where k is the Boltzmann constant.

N is the number of molecules.

These equations are exact only for an ideal gas, which neglects various intermolecular effects.However, the ideal gas law is a good approximation for most gases under moderate pressure and temperature.

This law has the following important consequences:

  1. If temperature and pressure are kept constant, then the volume of the gas is directly proportional to the number of molecules of gas.
  2. If the temperature and volume remain constant, then the pressure of the gas changes is directly proportional to the number of molecules of gas present.
  3. If the number of gas molecules and the temperature remain constant, then the pressure is inversely proportional to the volume.
  4. If the temperature changes and the number of gas molecules are kept constant, then either pressure or volume (or both) will change in direct proportion to the temperature.

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2009

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