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Gibbs Free Energy

19. Chemical Thermodynamics / Gibbs Free Energy / Problem 2

At constant temperature, an ideal gas undergoes expansion. Determine the signs (+, −, or 0) of ΔS, ΔH, and ΔG for this process.

A

ΔH = 0
ΔS > 0, (+)
ΔG < 0, (−)

B

ΔH = 0
ΔS = 0
ΔG = 0

C

ΔH < 0, (−)
ΔS > 0, (+)
ΔG < 0, (−)

D

ΔH < 0, (−)
ΔS = 0
ΔG < 0, (−)

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