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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible __________ process.

Isentropic
Adiabatic
Isothermal
Isometric

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Chemical Engineering Thermodynamics
Ideal refrigeration cycle is

Same as reverse Carnot cycle
Dependent on the refrigerant's properties
Same as Carnot cycle
The least efficient of all refrigeration processes

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Chemical Engineering Thermodynamics
The change in Gibbs freee energy for vaporisation of a pure substance is

Negative
May be positive or negative
Positive
Zero

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Chemical Engineering Thermodynamics
The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

RT lnK
-RT lnK
T lnK
-R lnK

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Chemical Engineering Thermodynamics
Critical temperature is defined as the temperature above which a gas will

Immediately liquify
Not liquify (barring exceptions)
None of these
Never liquify however high the pressure may be

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Chemical Engineering Thermodynamics
In case of a close thermodynamic system, there is __________ across the boundaries.

No mass transfer but heat transfer
Mass and energy transfer
None of these
No heat and mass transfer

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