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

Related Mcqs:

1. 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...

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 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...

4. 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...

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. Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is________________?

   A. 0 B. 1 C. ∞ D. None of these...

7. 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...

8. For a given substance at a specified temperature, activity is ______________ to fugacity?

   A. Directly proportional B. Inversely proportional C. Equal D. None of these...

9. 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...

10. As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches____________________?

    A. Zero B. Unity C. Infinity D. An indeterminate value...