Thermodynamics: ideal gas chemical potential

  • Thread starter Lordgraver
  • Start date
  • #1
Can someone explain me why we could put pi, μi and μiο in
this equation:
upload_2015-1-4_16-8-29.png

and we get this:
potencjal_chemiczny.jpg

(this is The chemical potential of a component in a perfect mixture of ideal gases wher pi is
partial pressure)
 

Answers and Replies

  • #2
DrDu
Science Advisor
6,234
885
Basically, this is the definition of a perfect mixture, i.e. the partial pressure of a component in the mixture is equal to the pressure of the pure component being in equilibrium contact via a semipermeable membrane being permeable only for this component.
 
  • #3
ok.... Can you enlighten me as to prove this equation? How to start it?
 
  • #4
DrDu
Science Advisor
6,234
885
If the gas in the mixture and the free gas on the other side of the semipermeable membrane are in equilibrium when the partial respective total pressures are equal then also the chemical potentials must be equal and have the same dependence on the respective pressures.
 
  • #5
21,938
4,992
See Chapter 10 of Introduction to Chemical Engineering Thermodynamics by Smith and Van Ness.

Chet
 

Related Threads on Thermodynamics: ideal gas chemical potential

Replies
14
Views
675
Replies
4
Views
12K
Replies
0
Views
3K
Replies
1
Views
3K
Replies
6
Views
2K
  • Last Post
Replies
3
Views
877
  • Last Post
Replies
1
Views
583
Top