Number of degrees of freedom for a three phase system in equilibrium comprising of three non-reacting chemical species is__________________?

Related Mcqs:

1. 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

2. What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope ?

   A. 0
   B. 2
   C. 1
   D. 3

3. What is the degree of freedom for two miscible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope ?

   A. 0
   B. 1
   C. 2
   D. 3

4. 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

5. What is the degree of freedom for a system comprising liquid water equilibrium with its vapour ?

   A. 0
   B. 1
   C. 2
   D. 3

6. What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor ?

   A. 2
   B. 0
   C. 3
   D. 1

7. The number of degrees of freedom at the triple point of water is__________________?

   A. 0
   B. 1
   C. 2
   D. 3

8. 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

9. 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

10. “The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances”. This is the_________________?

    A. Lewis-Randall rule
    B. Statement of Van’t Hoff Equation
    C. Le-Chatelier’s principle
    D. None of these