A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the substance
Related Mcqs:
- 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 - At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be________________?
A. More
B. Less
C. Same
D. More or less; depending on the system - The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by_________________?
A. (∂E/∂ni)S, v, nj
B. (∂G/∂ni)T, P, nj = (∂A/∂ni) T, v, nj
C. (∂H/∂ni)S, P, nj
D. All (A), B. and (C) - With increase in pressure (above atmospheric pressure), the Cp of a gas_____________________?
A. Increases
B. Decreases
C. Remains unchanged
D. First decreases and then increases - Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the_______________?
A. Low pressure and high temperature
B. Low pressure and low temperature
C. High pressure and low temperature
D. High pressure and high temperature - Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is – 57°C and 5.2 atm) ?
A. Pressure must be kept below 5.2 atm
B. Temperature must be kept above – 57°C
C. Pressure must be kept below 5.2 atm. and temperature must be kept above 57°C
D. Pressure and temperature must be kept below 5.2 atm. and – 57°C respectively - Degrees of freedom at triple point will be______________?
A. 0
B. 1
C. 2
D. 3 - The number of degrees of freedom at the triple point of water is__________________?
A. 0
B. 1
C. 2
D. 3 - “At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero”. This follows from the __________________?
A. Third law of thermodynamics
B. Second law of thermodynamics
C. Nernst heat theorem
D. Maxwell’s relations - 500 c.c. each of hydrogen at 700 mm Hg pressure and oxygen at 600 mm Hg pressure are put together in a vessel of 1 litre capacity. The final pressure of the gas mixture will be _____________ mm Hg?
A. 650
B. 700
C. 600
D. 375
