The equation relating E, P, V and T which is true for all substances under all conditions is given by (∂E/∂V)T = T(∂P/∂T)H – P. This equation is called the ___________________?

Related Mcqs:

1. Pick out the correct equation relating ‘F’ and ‘A’___________________?

   A. F = A + PV
   B. F = E + A
   C. F = A – TS
   D. F = A + TS

2. Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the ____________ equation?

   A. Gibbs-Duhem
   B. Maxwell’s
   C. Clapeyron
   D. None of these

3. 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

4. To obtain integrated form of Clausius-Clapeyron equation, ln (P2/P1) = (ΔHV/R) (1/T1 – 1/T2) from the exact Clapeyron equation, it is assumed that the____________________?

   A. Volume of the liquid phase is negligible compared to that of vapour phase
   B. Vapour phase behaves as an ideal gas
   C. Heat of vaporisation is independent of temperature
   D. All A , B. & C.

5. The biological decomposition of organic substances in wastes controlled conditions is called_________________?

   A. Incineration
   B. Biological oxidation
   C. Composting
   D. None of these

6. Which of the following is true for Virial equation of state ?

   A. Virial co-efficients are universal constants
   B. Virial co-efficients ‘B’ represents three body interactions
   C. Virial co-efficients are function of temperature only
   D. For some gases, Virial equations and ideal gas equations are the same

7. The equation, Cp – Cv = R, is true for _______________ gas?

   A. No
   B. Any real
   C. Only ideal
   D. Both B. and C.

8. The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is__________________?

   A. A . x22
   B. Ax1
   C. Ax2
   D. Ax12

9. Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition that the molar volume of liquid is negligible compared to that of the vapor ?

   A. d ln p/dt = Hvap/RT2
   B. d ln p/dt = RT2/Hvap
   C. dp/dt = RT2/Hvap
   D. dp/dt = Hvap/RT2

10. 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.