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Boyle temperature : ウィキペディア英語版
Boyle temperature
Boyle temperature is the temperature at which a non ideal gas behaves most like an ideal gas. At Boyle temperature, set the compressibility factor Z to 1, and one can obtain
:T_b = \frac
Where a and b are van der Waals parameters.

p = RT \left(\frac + \frac + \frac + \dots \right)
This is the virial equation of state and describes a real gas.
The Boyle temperature is formally defined as the temperature for which the second virial coefficient, B_(T) becomes 0.
It is at this temperature that the attractive forces and the repulsive forces acting on the gas particles balance out. Since higher order virial coefficients are generally much smaller than the second coefficient, the gas tends to behave as an ideal gas over a wider range of pressures when the temperature reaches the Boyle temperature (or when c = \frac or p are minimized).
In any case, when the pressures are low, the second virial coefficient will be the only relevant one because the remaining concern terms of higher order on the pressure. We then have
:\frac = 0 \qquad\mbox p=0
where Z is the compressibility factor
== See also ==

* Virial equation#Virial equation of state
* Real gas viral model

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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