For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system _____________ as its mole fraction increases?

A. Temperature
B. Specific heat
C. Volume
D. Pressure

A. Are more or less constant (vary from 0.2 to 0.3)
B. Vary as square of the absolute temperature
C. Vary as square of the absolute pressure
D. None of these

A. Reversible and isothermal
B. Isothermal and irreversible
C. Reversible and adiabatic
D. Adiabatic and irreversible

A. With pressure changes at constant temperature
B. Under reversible isothermal volume change
C. During heating of an ideal gas
D. During cooling of an ideal gas

A. Pressure
B. Temperature
C. Both A. & B.
D. Neither A. nor B.

A. Gibbs-Duhem
B. Maxwell’s
C. Clapeyron
D. None of these