The compressibility factor is always greater than unity above the Boyle temperature and rises gradually but steadily with pressure.
What is Boyle temperature?
A real gas begins to act like an ideal gas at a certain pressure range at a temperature, which is known as the boyle temperature. A Boyle temperature is the point at which the second coefficient of an equation reaches zero.
The temperature at which a real gas begins to behave like an ideal gas across a specific range of pressure is known as Boyle's temperature or the Boyle point. Compressibility factor Z and pressure P are represented on a graph.
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