Chemical Engineering Thermodynamics
Gibbs-Duhem equation

None of these
Applies only to binary systems
Finds no application in gas-liquid equilibria involved in distillation
States that n₁dμ₁ + n₂dμ₂ + ....njdμj = 0, for a system of definite composition at constant temperature and pressure

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

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

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