For a multi-component system, the term chemical potential is equivalent to the ___________________?

Related Mcqs:

1. At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?

   A. μ° + RT ln f
   B. μ°+ R ln f
   C. μ° + T ln f
   D. μ° + R/T ln f

2. When liquid and vapour phase of multi-component system are in equilibrium (at a given temperature and pressure), then chemical potential of each component is___________________?

   A. Same in both the phases
   B. Zero in both the phases
   C. More in vapour phase
   D. More in liquid phase

3. 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

4. For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the _______________ of each component must be same in all phases?

   A. Chemical potential
   B. Fugacity
   C. Both A. and B
   D. Neither A. nor B

5. 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

6. Chemical potential of ith component of a system is given by________________?

   A. μi = (∂F/∂ni)T, P, ni
   B. μi = (∂A/∂ni)T, P, ni
   C. μi = (∂F/∂ni)T, P
   D. μi = (∂A/∂ni)T, P

7. The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by_________________?

   A. (∂E/∂ni)S, v, nj
   B. (∂G/∂ni)T, P, nj = (∂A/∂ni) T, v, nj
   C. (∂H/∂ni)S, P, nj
   D. All (A), B. and (C)

8. The equilibria relations in a multi-component and multiphase system cannot be calculated with the help of the_______________?

   A. Phase rule
   B. Experimental data
   C. Empirical equations
   D. Theoretical equations

9. 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

10. According to Raoult’s law, “The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component.” Raoult’s law is not applicable under the following assumption/condition?

    A. No component is concentrated at the surface of the solution
    B. The component molecules are non polar and are of almost equal size
    C. In the formation of solution, chemical combination/molecular association between unlike
    molecules takes place
    D. The attractive forces between like and unlike molecules are almost equal