The value of (Cp – Cv) for a real gas obeying Vander Wall’s equation is____________________?

Related Mcqs:

1. Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces ?

   A. RT
   B. P + (a/V2)
   C. (V – b)
   D. 1/RT

2. The internal energy of a gas obeying P (V – b) RT (where, b is a positive constant and has a constant Cv), depends upon its________________?

   A. Pressure
   B. Volume
   C. Temperature
   D. All A, B. & C

3. The compressibility factor for an ideal gas is 1. Its value for any other real gas is_______________?

   A. 1
   B. 1
   D. Either B. or C, depends on the nature of the gas

4. The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?

   A. 2M
   B. M/2
   C. M
   D. M/4

5. The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?

   A. V1/V2
   B. V2/V1
   C. V1 – V2
   D. V1.V2

6. Which of the following holds good for a solution obeying Raoult’s law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing) ?

   A. ΔH = 1 (+ ve) and Δ V = -ve
   B. ΔH = 0
   C. ΔV = 0
   D. Both B. and C.

7. Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult’s law is proportional to the_____________?

   A. Temperature
   B. Volume of solution
   C. Moles of non-volatile solute
   D. None of these

8. The molecular velocity of a real gas is proportional to (where, T = absolute temperature of the gas)?

   A. √T
   B. T
   C. T2
   D. 1/√T

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 temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the ____________ temperature?

    A. Critical
    B. Boyle
    C. Inversion
    D. Reduced