Related Questions

For multicomponent 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
In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of
A Concentrations
B Chemical potentials
C Activity co-efficients
D Mass transfer co-efficients
Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.
A Chemical properties
B Physical properties
C Degree of turbulence
D Interfacial area
The reaction A (l) R(g) is allowed to reach equilibrium conditions in an autoclave. At equilibrium, there are two phases, one a pure liquid phase of A and the other a vapor phase of A, R and S. Initially A alone is present. The number of degrees of freedom are
A 1
B 2
C 3
D 0
Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be
A Same
B Doubled
C Halved
D One fourth of its original value
When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is
A More in vapour phase
B More in liquid phase
C Same in both the phases
D Replaced by chemical potential which is more in vapour phase
The variation in the volume of a liquid with the variation of pressure is called its
A Surface tension
B Compressibility
C Capillarity
D Viscosity
Those substances which have so far not been resolved by any means into other substances of simpler form are called
A Atoms
B Compounds
C Elements
D Molecules
The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal __________ in the two phases.
A Potential energy
B Intermolecular forces
C Kinetic energy
D Total energy
Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the
A Vapor follows the ideal gas law
B Molal latent heat of vaporisation is constant within the limited temperature range
C Volume in the liquid state is negligible compared with that in the vapor state
D All of the above

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