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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
What happens in a reversible adiabatic compression?

Heating occurs
Pressure is constant
Cooling occurs
Temperature is constant

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Chemical Engineering Thermodynamics
What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

2
0
1
3

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Chemical Engineering Thermodynamics
Reduced pressure of a gas is the ratio of its

Critical pressure to pressure
Pseudocritical pressure to pressure
Pressure to pseudocritical pressure
Pressure to critical pressure

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Chemical Engineering Thermodynamics
First law of thermodynamics deals with the

None of these
Reversible processes only
Direction of energy transfer
Irreversible processes only

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Chemical Engineering Thermodynamics
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is

4.238
1.9398
3.389
1.572

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Chemical Engineering Thermodynamics
Fugacity of a component in an ideal gas mixture is euqal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at contant pressure and temperature __________ as its mole fraction increases.

Increases
Remains constant
Decreases
Decreases exponentially

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