Thermodynamics for Chemical Quiz 5

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Thermodynamics for Chemical Quiz 5

1 / 50

If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the __________?

2 / 50

In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents a reversible _____ process?

3 / 50

In case of the decomposition of hydroiodic acid (2HI ? H2 + I2), addition of H2 (at equilibrium condition) will___________?

4 / 50

In polytropic process (PVn = constant), if n = 1; it means a/an _______ process?

5 / 50

In a homogeneous solution, the fugacity of a component depends upon the ___________?

6 / 50

In the reaction, C + O2 ? CO2; ?H = ? 94 kcal. What is the heat content (enthalpy) of O2 ?

7 / 50

In a working refrigerator, the value of COP is always___________?

8 / 50

Helmholtz free energy A. is defined as______?

9 / 50

In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible _______ process?

10 / 50

If an ideal solution is formed by mixing two pure liquids in any proportion, then the _____ of mixing is zero?

11 / 50

In the equation, PVn = constant, if the value of n = 1, then it represents a reversible ______ process?

12 / 50

In a P-V diagram (for an ideal gas), an isothermal curve will coincide within adiabatic curve (through a point), when_____?

13 / 50

High pressure steam is expanded adiabatically and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ?H and ?S respectively for this process ?

14 / 50

In the reaction, H2 +I2 ? 2HI, addition of an inert gas will_____?

15 / 50

In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when________?

16 / 50

If we increase the pressure on a substance (which is at its triple point), then the triple point ___________?

17 / 50

If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in______?

18 / 50

In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is________?

19 / 50

In the equation, PVn = constant, if the value of n = ? ?, then it represents a reversible ______ process?

20 / 50

In an ideal solution, the activity of a component equals its ___________?

21 / 50

Heating of water under atmospheric pressure is an _______ process?

22 / 50

In jet refrigerators, the refrigerating fluid is practically always__________?

23 / 50

In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about ______ percent?

24 / 50

In Joule-Thomson porous plug experiment, the___________?

25 / 50

Ideal gas law is applicable at______?

26 / 50

In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v23 m3) is maximum, when the value of ?n? is__________?

27 / 50

In case of an ________ process, the temperature of the system increases?

28 / 50

In an irreversible process_________?

29 / 50

In any spontaneous process, the _______ free energy decreases ?

30 / 50

If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will_____?

31 / 50

In the decomposition of PCl5 represented by, PCl5 ? PCl3 + Cl2, decrease in the pressure of the system will ______ the degree of dissociation of PCl5?

32 / 50

Henry?s law is closely obeyed by a gas, when its ______ is extremely high?

33 / 50

In a reversible process___________?

34 / 50

High ______ is an undesirable property for a good refrigerant?

35 / 50

Ideal refrigeration cycle is______?

36 / 50

If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ?H for the reaction CH4(g) + C2H4(g) ? C3H8(g) will be ______ Kcal?

37 / 50

In any spontaneous process, ?

38 / 50

In an ideal refrigeration cycle, the change in internal energy of the fluid is______?

39 / 50

In a homogeneous solution, the activity co-efficient of a component depends upon the__________?

40 / 50

If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the______?

41 / 50

In the reaction, represented by, 2SO2 + O2 ? 2SO3; ?H = ? 42 kcal; the forward reaction will be favoured by______?

42 / 50

In the ammonia synthesis reaction, N2 + 3H2 ? 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by_____?

43 / 50

If atmospheric temperature and dew point are nearly equal, then the relative humidity is________?

44 / 50

In case of a close thermodynamic system, there is _______ across the boundaries?

45 / 50

If two gases have same reduced temperature and reduced pressure, then they will have the same______?

46 / 50

In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible _______ process?

47 / 50

In an ideal gas mixture, fugacity of a species is equal to its_____?

48 / 50

In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in______?

49 / 50

In a turbine, the fluid expands almost__________?

50 / 50

If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as___________?

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