Chemical Engineering Thermodynamics
The expression, ΔG = nRT .In P₂/P₁ , gives the free energy change

During cooling of an ideal gas
Under reversible isothermal volume change
During heating of an ideal gas
With pressure changes at constant temperature

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Chemical Engineering Thermodynamics
Which of the following will increase the volume of a real gas by four times ?

Doubling the absolute temperature as well as pressure of the gas
Reducing the temperature to half and doubling the pressure
Reducing temperature to one fourth at constant pressure
Reducing pressure to one fourth at constant temperature

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