Thermodynamics for Chemical Quiz 2
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At 60? C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60? C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is___________?
2 / 50
Answer: Option B 392. Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27?C, the temperature should be raised to ______ ?C?
3 / 50
At a given temperature, the volume of a gas dissolved in a solvent ________ with increase in pressure?
4 / 50
Co-efficient of performance for a reversed Carnot cycle working between temperatures T1 and T2 (T1 > T2) is _____?
5 / 50
All gases except _____ shows a cooling effect during throttling process at atmospheric temperature and pressure?
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7 / 50
At the critical point of a substance_____?
8 / 50
Change of state namely evaporation condensation, freezing and melting is an ________ process?
9 / 50
Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the___________?
10 / 50
Activity co-efficient is a measure of the______?
11 / 50
Claude gas liquefaction process employs cooling_____?
12 / 50
At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is______?
13 / 50
All gases during throttling process at atmospheric temperature and pressure show a cooling effect except___________?
14 / 50
Clausius-Clapeyron Equation gives accurate result, when the ___________?
15 / 50
Compressibility factor of a gas is_____?
16 / 50
Compressibility factor (i.e., the ratio of actual volume of gas to the volume predicted by ideal gas law) for all gases are________?
17 / 50
At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (?) is given by (where, ? = standard chemical potential at unit fugacity (f? = 1 atm.) and the gas behaves ideally.) ?
18 / 50
As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches______?
19 / 50
At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be_________?
20 / 50
At absolute zero temperature, the ______ of the gas is zero?
21 / 50
Boiling of liquid is accompanied with increase in the___________?
22 / 50
An isolated system can exchange _______ with its surroundings?
23 / 50
Clausius-Clapeyron equation is applicable to ______ equilibrium processes?
24 / 50
Compound having large heat of formation is_______?
25 / 50
Compressibility factor for almost all the gases are approximately same at the same___________?
26 / 50
Adiabatic compression of a saturated water vapour makes it ______ ?
27 / 50
Any substance above its critical temperature exists as _______?
28 / 50
As the temperature is lowered towards the absolute zero, the value of the quantity (??F/?T) approaches_________?
29 / 50
Claude?s liquefaction process employs the cooling of gases by___________?
30 / 50
Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is_________?
31 / 50
After throttling, gas temperature_____?
32 / 50
Clapeyron Equation deals with the______?
33 / 50
Air-refrigeration cycle_________?
34 / 50
An ideal liquid refrigerant should________?
35 / 50
Boyle?s law for gases states that______?
36 / 50
Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of _______?
37 / 50
An isentropic process is carried out at constant______?
38 / 50
Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is ? 57?C and 5.2 atm) ?
39 / 50
As the entropy of the universe is increasing, day by day, the work producing capacity of a heat engine is__________?
40 / 50
Chemical potential of ith component of a system is given by_________?
41 / 50
Chemical potential is a/an_______?
42 / 50
Chemical engineering thermodynamics is concerned with the _____ in/of chemical processes?
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44 / 50
Co-efficient of Performance (COP) of a refrigerator is the ratio of the ________?
45 / 50
Charles? law for gases states that___________?
46 / 50
As the temperature is lowered towards the absolute zero, the value of ?(?F)/?T, then approaches_________?
47 / 50
At normal boiling point, molar entropy of vaporisation is ______ Joule/K?.mole?
48 / 50
An irreversible process______?
49 / 50
Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates___________?
50 / 50
Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is_____?
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