Fugacity is most helpful in

A Representing actual behaviour of real gases
B Representing actual behaviour of ideal gases
C The study of chemical equilibria involving gases at atmospheric pressure
D None of these

Correct Answer: Representing actual behaviour of real gases

Fugacity for ideal gas is equal to its pressure but for a real gas it is not equal to pressure higher the difference higher is the non-ideality actually the fugacity coefficient acts as an measure of non-ideality.
Bissoy MCQ
#Chemical Engineering #Chemical Engineering Thermodynamics

Related Questions

Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature.
A Decreases
B Increases
C Remains constant
D Decreases logarithmically
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.
A Decreases
B Decreases exponentially
C Increases
D Remains constant
Fugacity co-efficient of a substance is the ratio of its fugacity to
A Mole fraction
B Activity
C Pressure
D Activity co-efficient
"The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is
A The statement as per Gibbs-Helmholtz
B Called Lewis-Randall rule
C Henry's law
D None of these
The standard state of a gas (at a given temperature) is the state in which fugacity is equal to
A Unity
B Activity
C Both A & B
D Neither A nor B
In a homogeneous solution, the fugacity of a component depends upon the
A Pressure
B Composition
C Temperature
D All of the above
Fugacity is a measure of the
A Escaping tendencies of the same substance in different phases of a system
B Relative volatility of a mixture of two miscible liquids
C Behaviour of ideal gases
D None of these
Fugacity and pressure are numerically not equal for the gases
A At low temperature and high pressure
B At standard state
C Both A and B
D In ideal state
For a given substance at a specified temperature, activity is __________ to fugacity.
A Directly proportional
B Inversely proportional
C Equal
D None of these
The unit of fugacity is the same as that of the
A Pressure
B Temperature
C Volume
D Molar concentration

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