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The second law of thermodynamics states that

A. The energy change of a system undergoing any reversible process is zero

B. It is not possible to transfer heat from a lower temperature to a higher temperature

C. The total energy of system and surrounding remains the same

D. None of the above

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  1. For an exothermic reaction
  2. With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure
  3. Free energy change at equilibrium is
  4. For a given substance at a specified temperature, activity is __________ to fugacity.
  5. For a reversible process involving only pressure-volume work
  6. Activity co-efficient is a measure of the
  7. Partial molar free energy of an element A in solution is same as its
  8. At equilibrium condition, the chemical potential of a material in different phases in contact with each…
  9. For an isothermal reversible compression of an ideal gas
  10. In the ammonia synthesis reaction, N2 + 3H2 2NH3 + 22.4 kcal, the formation of NH3 will be favoured…
  11. Entropy of an ideal gas depends upon its
  12. The ratio of equilibrium constants (Kp2/Kp1) at two different temperatures is given by
  13. Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression…
  14. A system is said to be at equilibrium, if the entropy of the system has reached __________ value.
  15. The chemical potential for a pure substance is __________ its partial molal free energy.
  16. First law of thermodynamics is mathematically stated as
  17. The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature…
  18. If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________…
  19. For organic compounds, group contribution method can be used for the estimation of
  20. When a system is in equilibrium for all possible processes, the differential or finite change of entropy…
  21. For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist…
  22. For the reversible exothermic reaction, N2 + 3H2 2NH3, increase of pressure would
  23. Pick out the Clausius-Clapeyron equation from the following:
  24. Normal temperature and pressure (N.T.P.) corresponds to
  25. Absorption/evolution of heat during conversion of a substance from one allotropic form to another is…
  26. For the gaseous phase chemical reaction, C2H4(g) + H2O(g) ↔ C2H5OH(g), the equilibrium conversion…
  27. At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy…
  28. The unit of fugacity is the same as that of the
  29. If different processes are used to bring about the same chemical reaction, the enthalpy change is same…
  30. Fugacity is most helpful in