Boyle temperature

The Boyle temperature is the temperature at which standing under a small pressure real gas behaves like an ideal gas. At this temperature, the second virial coefficient disappears. The pV -p- Count ( isotherms in the pressure-volume diagram ) run, at least at low pressures, then after Boyle's gas law and thus horizontal. This temperature value was named after Robert Boyle. The symbol of the Boyle temperature TB. It results from the following approximation:

If you use the Virialgleichungen and ends the approximation in the second term of the series, the result for the Boyle temperature:

So

The individual symbols stand for the following sizes:

  • Z - compressibility
  • P - pressure
  • V - volume
  • T - temperature
  • A, b - van der Waals parameters
  • B - second virial coefficient
  • R - universal gas constant

At temperatures below the Boyle - temperature B (T) is negative.

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