A. Temperature
B. Pressure
C. Composition
D. All (A), B. and (C)
Related Mcqs:
- 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 (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?
A. μ° + RT ln f
B. μ°+ R ln f
C. μ° + T ln f
D. μ° + R/T ln f - 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________________?
A. 0
B. 1
C. ∞
D. None of these - 80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?
A. 0.00
B. 0.18
C. 0.24
D. 1.00 - The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour________________?
A. Measures the elevation in boiling point
B. Is not dependent on the temperature
C. Is a function of the liquid phase composition
D. Measures the depression in freezing point - For an ideal gas, the chemical potential is given by______________?
A. RT d ln P
B. R d ln P
C. R d ln f
D. None of these - If two pure liquid constituents are mixed in any proportion to give an ideal solution, there is no change in____________________?
A. Volume
B. Enthalpy
C. Both A. & B
D. Neither A. nor B - 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__________________?
A. Solubility increases as temperature increases
B. Solubility increases as temperature decreases
C. Solubility is independent of temperature
D. Solubility increases or decreases with temperature depending on the Gibbs free energy change
of solution - For an ideal liquid solution, which of the following is unity ?
A. Activity
B. Fugacity
C. Activity co-efficient
D. Fugacity co-efficient - Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a __________________?
A. Straight line
B. Sine curve
C. Parabola
D. Hyperbola - If an ideal solution is formed by mixing two pure liquids in any proportion, then the ___________________ of mixing is zero?
A. Enthalpy
B. Volume
C. Both A. & B.
D. Neither A nor B
