(∂H/∂T)P is the mathematical expression for


B. Entropy change

C. Gibbs free energy

D. None of these

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  1. A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________…
  2. The difference between isothermal compressibility and adiabatic compressibility for an ideal gas is
  3. Entropy of the system decreases, when
  4. Dry ice is
  5. __________ law of thermodynamics ascertains the direction of a particular spontaneous process.
  6. A system undergoes a change from a given initial state to a given final state either by an irreversible…
  7. The internal energy of a gas obeying P (V - b) RT (where, b is a positive constant and has a constant…
  8. The most important application of distribution law is in
  9. If the internal energy of an ideal gas decreases by the same amount as the work done by the system,…
  10. Forward reaction will be favoured for the exothermic reaction, represented by CO + H2O CO2 + H2, by
  11. Fugacity co-efficient of a substance is the ratio of its fugacity to
  12. Which of the following has the least thermal efficiency?
  13. A large iceberg melts at the base, but not at the top, because of the reason that
  14. Entropy is a measure of the __________ of a system.
  15. The first law of thermodynamics is a statement of conservation of
  16. A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy…
  17. Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed…
  18. In the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2, decrease in the pressure of the system…
  19. The equilibrium constant for a chemical reaction at two different temperatures is given by
  20. The equation relating E, P, V and T which is true for all substances under all conditions is given by…
  21. If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are…
  22. At a given temperature, the volume of a gas dissolved in a solvent __________ with increase in pressure.
  23. 1st law of thermodynamics is nothing but the law of conservation of
  24. Boiling of liquid is accompanied with increase in the
  25. Free energy changes for two reaction mechanism 'X' and 'Y are respectively - 15 and - 5 units. It implies…
  26. The heat capacities for the ideal gas state depend upon the
  27. Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas…
  28. A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
  29. Melting of wax is accompanied with __________ in entropy.
  30. For an exothermic reaction