In any spontaneous process, ?

A. Phase rule variables are intensive properties
B. Heat and work are both state function
C. The work done by expansion of a gas in vacuum is zero
D. CP and CV are state function

A. Bomb
B. Separating
C. Bucket
D. Throttling

A. 0
B. 1
C. 2
D. 3

A. 0°C
B. 273°C
C. 100°C
D. -273°C

A. (dF)T, p 0
C. (dF)T, p = 0
D. (dA)T, v < 0

A. F = A + PV
B. F = E + A
C. F = A – TS
D. F = A + TS