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
Related Mcqs:
- 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 numbers of degrees of freedom are ?
A. 1
B. 2
C. 3
D. 0 - The necessary and sufficient condition for equilibrium between two phases is_________________?
A. The concentration of each component should be same in the two phases
B. The temperature of each phase should be same
C. The pressure should be same in the two phases
D. The chemical potential of each component should be same in the two phases - 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 - Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as________________?
A. P + F – C = 2
B. C = P – F + 2
C. F = C – P – 2
D. P = F – C – 2 - If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the _________________?
A. Maxwell’s equation
B. Clausius-Clapeyron Equation
C. Van Laar equation
D. Nernst Heat Theorem - Equilibrium constant of a reaction varies with the____________________?
A. Initial concentration of the reactant
B. Pressure
C. Temperature
D. None of these - Solid and liquid phases of a substance are in equilibrium at the____________________?
A. Critical temperature
B. Melting point
C. Freezing point
D. Both B. and C - The quantitative effect of temperature on chemical equilibrium is given by the____________________?
A. Van’t-Hoff equation
B. Le-Chatelier’s principle
C. Arrhenius equation
D. None of these - The equation, (d loge PA/d loge xA) = (d loge PA/d loge xB) applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the _____________ equation?
A. Van Laar
B. Margules
C. Gibbs-Duhem
D. Gibbs-Duhem-Margules - A gas mixture of three components is brought in contact with a dispersion of an organic phase in water. The degree of freedom of the system is______________?
A. 3
B. 4
C. 5
D. 6
