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| For
a system in which the composition can be changed, the Gibbs function depends
upon (T, p, ni) where T is the temperature, p the pressure,
and ni the molar content of species i. In an arbitrary process:
dG = (dG/dT)p,n dT + (dG/dp)T,n dp + Si (dG/dn)T,p dn. The quantity (dG/dn)T,p = mi is known as the Chemical Potential of the species i at this temperature and pressure. |
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