Exergy and Gibbs free energy

  • Thread starter Nikitin
  • Start date
  • #1
726
27
Hi. I have two questions:

1) Is -ΔG the amount of useful work a system can do while the pressure and temperature of the surroundings are constant?

2) Is exergy = -ΔG only if the pressure and temperature of the system and surroundings is constant?

thanks
 

Answers and Replies

  • #2
1,948
200
What is exergy?
 
  • #3
726
27
It's defined as the theoretical maximum work a system can do when moving towards thermal equilibrium.

I'm just unsure about the specifics behind its definition.

http://en.wikipedia.org/wiki/Exergy
 

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