what is the definition of fugacity explain the real gas of graphical method
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In chemical thermodynamics, the fugacity of a real gas is an effective partial pressure which replaces the mechanical partial pressure in an accurate computation of the chemical equilibrium constant. It is equal to the pressure of an ideal gas which has the same temperature and molar Gibbs free energy as the real gas.
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A gas which doesn't follow ideal gas behaviour that is obeying all gas laws at any temperature and pressure is called as real gas.
- Real gases have a very low pressure.
- These gases have high temperature.
- On considering the compressibility factor(z),
- The compressibility factor (z) is ; Z = PV/nRT
- So For real gas, z≠1
- So, PV≠nRT.
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