For a given substance at a specified temperature, activity is ______________ to fugacity?

A. d ln p/dt = Hvap/RT2
B. d ln p/dt = RT2/Hvap
C. dp/dt = RT2/Hvap
D. dp/dt = Hvap/RT2

A. It should be non-explosive
B. It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
C. Its vapor pressure at the condenser temperature should be very high
D. None of these

A. Volume
B. Pressure
C. Temperature
D. All a, b & c

A. Lewis-Randall
B. Margules
C. Van Laar
D. Both B. & C.