Fugacity is a measure of the____________________?

Related Mcqs:

1. A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yi is the liquid activity coefficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of ______________________?

   A. Temperature only B. Temperature and pressure only C. Temperature, pressure and liquid composition xi only D. Temperature, pressure, liquid composition xi and vapour composition yi...

2. “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...

3. Fugacity co-efficient of a substance is the ratio of its fugacity to__________________?

   A. Mole fraction B. Activity C. Pressure D. Activity co-efficient...

4. Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature ____________ as its mole fraction increases?

   A. Decreases B. Decreases exponentially C. Increases D. Remain constant...

5. For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be__________________?

   A. 6738.9 B. 6753.5 C. 7058.3 D. 9000...

6. 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...

7. Activity co-efficient is a measure of the____________________?

   A. Departure from ideal solution behaviour B. Departure of gas phase from ideal gas law C. Vapour pressure of liquid D. None of these...

8. With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure___________________?

   A. Increases B. Decreases C. Remain same D. Decreases linearly...

9. For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system _____________ as its mole fraction increases?

   A. Decreases B. Increases C. Remain same D. Decreases linearly...

10. In an ideal gas mixture, fugacity of a species is equal to its___________________?

    A. Vapor pressure B. Partial pressure C. Chemical potential D. None of these...