1. The problem statement, all variables and given/known data
The pH of pure water is temperature dependent, for example it is 6.55 at 50 C. Determine ΔG° for the ionization of water at 50C
2. Relevant equations
ΔG=ΔG°+RTln(Q)
at eqm ΔG=0
q=Keq
pure water:
pH 7.00 at 25C
3. The attempt at a solution
Not sure if the process is at eqm at 50C
but if it was you could just use
ΔG°=-RTln(Keq)
and use the pH to get the keq and you end up with 40.5KJ/mol which doesn't seem right
what is the difference between ΔG° and ΔGf°
thanks