Free energy

A. Decreases in all spontaneous (or irreversible) processes

B. Change during a spontaneous process has a negative value

C. Remains unchanged in reversible processes carried at constant temperature and pressure

D. All (A), (B) and (C)

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  1. The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while…
  2. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called…
  3. Gibbs free energy at constant pressure and temperature under equilibrium conditions is
  4. It is desired to bring about a certain change in the state of a system by performing work on the system…
  5. Isentropic process means a constant __________ process.
  6. Internal energy of an ideal gas
  7. Which of the following is an extensive property of a system?
  8. The gas law (PV = RT) is true for an __________ change.
  9. A refrigerator may be termed as a
  10. Change of state namely evaporation condensation, freezing and melting is an __________ process.
  11. In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction…
  12. One ton of refrigeration capacity is equivalent to the heat removal rate of
  13. If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change…
  14. Gibbs-Duhem equation
  15. Which of the following equations is used for the prediction of activity co-efficient from experiments?
  16. The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant…
  17. Which of the following is not a common refrigerant?
  18. Which of the following exemplifies an adiabatic process?
  19. Mollier chart is a __________ plot.
  20. PVγ = Constant (where, γ = Cp/Cv) is valid for a/an __________ process.
  21. What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at…
  22. In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1…
  23. Which is not a refrigerant?
  24. Lenz's law results from the law of conservation of
  25. In a homogeneous solution, the activity coefficient of a component depends upon the
  26. In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process.
  27. The temperature at the eutectic point of the system is the __________ temperature that can be attained…
  28. Which of the following will increase the volume of a real gas by four times?
  29. The second law of thermodynamics states that
  30. 1st law of thermodynamics is nothing but the law of conservation of