Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as________________?

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. Gibbs free energy (G) is represented by, G = H – TS, whereas Helmholtz free energy, A. is given by, A = E – TS. Which of the following is the Gibbs-Helmholtz equation ?

   A. [∂(G/T)/∂T] = – (H/T2)
   B. [∂(A/T)/∂T]V = – E/T2
   C. Both A. and B.
   D. Neither A. nor B.

3. Gibbs phase rule finds application, when heat transfer occurs by___________________?

   A. Conduction
   B. Convection
   C. Radiation
   D. Condensation

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

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

5. 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

6. Gibbs-Duhem equation relates composition in liquid phase and the _____________ at constant temperature & pressure?

   A. Fugacity
   B. Partial pressure
   C. Activity co-efficient
   D. All (A), (B), and (C)

7. For any system, what is the minimum number of degrees of freedom ?

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

8. The number of degrees of freedom for a mixture of ice and water (liquid) are ____________________?

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

9. 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

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

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