Thermodynamics for Chemical Quiz 5

1 / 50

**In an irreversible process_________?**

2 / 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?**

3 / 50

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

4 / 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_____?**

5 / 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___________?**

6 / 50

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

7 / 50

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

8 / 50

**In any spontaneous process, ?**

9 / 50

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

10 / 50

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

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

**Helmholtz free energy A. is defined as______?**

17 / 50

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

18 / 50

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

19 / 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 ?**

20 / 50

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

21 / 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?**

22 / 50

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

23 / 50

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

24 / 50

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

25 / 50

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

26 / 50

**In a turbine, the fluid expands almost__________?**

27 / 50

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

28 / 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__________?**

29 / 50

**In a reversible process___________?**

30 / 50

**In any spontaneous process, the _______ free energy decreases ?**

31 / 50

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

32 / 50

**In jet refrigerators, the refrigerating fluid is practically always__________?**

33 / 50

**Ideal refrigeration cycle is______?**

34 / 50

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

35 / 50

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

36 / 50

**Heating of water under atmospheric pressure is an _______ process?**

37 / 50

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

38 / 50

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

39 / 50

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

40 / 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?**

41 / 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 __________?**

42 / 50

**High ______ is an undesirable property for a good refrigerant?**

43 / 50

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

44 / 50

**Ideal gas law is applicable at______?**

45 / 50

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

46 / 50

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

47 / 50

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

48 / 50

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

49 / 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________?**

50 / 50

**In Joule-Thomson porous plug experiment, the___________?**

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