Chemical Thermodynamics Question 326
Question: In an irreversible process taking place at constant P and T in which only pressure-volume work is being done by the system, the change in Gibbs energy (dG) and change in entropy (dS) satisfy the criterion
Options:
A) $ {{(dS)} _{v,u}}=0,,{{(dG)} _{T,P}}=0 $
B) $ {{(dS)} _{v,u}}=0,,{{(dG)} _{T,P}}=+ve $
C) $ {{(dS)} _{v,u}}=-ve,,{{(dG)} _{T,P}}=-ve $
D) $ {{(dS)} _{v,u}}=+ve,,{{(dG)} _{T,P}}=-ve $
Show Answer
Answer:
Correct Answer: D
Solution:
- for a spontaneous change (work is being done by the system) $ {{(dG)} _{T,P}}=-ve $ and $ {{(dS)} _{V,U}}=+ve $
