Chemical Engineering Thermodynamics
Free energy change of mixing two liquid substances is a function of the

All of these
Concentration of the constituents only
Quantities of the constituents only
Temperature only

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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 pressure to one fourth at constant temperature
Reducing temperature to one fourth at constant pressure

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Chemical Engineering Thermodynamics
Gibbs-Duhem equation

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
None of these
Applies only to binary systems

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Chemical Engineering Thermodynamics
Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg . K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

Superheated vapour
Partially condensed vapour with quality of 0.1
Saturated vapour
Partially condensed vapour with quality of 0.9

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