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The expression for entropy change given by, ΔS = - nR ln (P2/P1), holds good for

A. Expansion of a real gas

B. Reversible isothermal volume change

C. Heating of an ideal gas

D. Cooling of a real gas

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Gibbs-Duhem equation
  2. Activity co-efficient is a measure of the
  3. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called…
  4. For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions,…
  5. The number of degrees of freedom at the triple point of water is
  6. In an ideal refrigeration cycle, the change in internal energy of the fluid is
  7. The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________…
  8. The internal energy of an ideal gas does not change in a reversible __________ process.
  9. An irreversible process
  10. After throttling, gas temperature
  11. Gibbs free energy of a pure fluid approaches __________ as the pressure tends to zero at constant temperature.
  12. If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________…
  13. During adiabatic expansion of gas
  14. Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature…
  15. The expression for the work done for a reversible polytropic process can be used to obtain the expression…
  16. Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a
  17. The value of Cp & Cv respectively for monatomic gases in Kcal/kg Mole.°K are
  18. The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in…
  19. The unit of equilibrium constant of a chemical reaction is the same as that of
  20. Cp of a gas at its critical temperature and pressure
  21. Domestic refrigerator usually works on the __________ refrigeration cycle.
  22. If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical,…
  23. The equation relating E, P, V and T which is true for all substances under all conditions is given by…
  24. Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would…
  25. Free energy change at equilibrium is
  26. High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which…
  27. In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases…
  28. What is the degree of freedom for a system comprising liquid water equilibrium with its vapour?
  29. Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as
  30. Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression…