A. Phase rule
B. Experimental data
C. Empirical equations
D. Theoretical equations
Related Mcqs:
- The number of degrees of freedom for an azeotropic mixture in a two component vapourliquid equilibria is/are__________________?
A. Zero
B. One
C. Two
D. Three - 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 - 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 - The necessary condition for phase equilibrium in a multiphase system of N components is that the____________________?
A. Chemical potentials of a given component should be equal in all phases
B. Chemical potentials of all components should be same in a particular phase
C. Sum of the chemical potentials of any given component in all the phases should be the same
D. None of these - 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 - In case of vapor-liquid equilibria, which of the following does not account for gas phase deviation from ideality ?
A. Use of equation of state
B. Fugacity co-efficient
C. Activity co-efficient
D. None of these - For a multi-component system, the term chemical potential is equivalent to the ___________________?
A. Molal concentration difference
B. Molar free energy
C. Partial molar free energy
D. Molar free energy change - Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the___________________?
A. Nature of the liquid
B. Nature of the gas
C. Temperature of the liquid
D. Total pressure - The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?
A. Trouton’s rule
B. Kopp’s rule
C. Antoine equation
D. Kistyakowsky equation - 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
