- #1
rafehi
- 49
- 1
Homework Statement
Consider the charging of a lead-acid batter at atmospheric pressure and room room temperature.
2PbSO4 +2H2O -> Pb + PbO2 + 4H+ + 2SO42-
How much electrical work must be provided to produce one mole of lead?
The Attempt at a Solution
We're given the values of Gibbs Free Energy and Enthalpy for each of the reactants.
I was doing a past paper for a uni exam and I came across that question. Now correct me if I'm wrong but isn't the electric work equal to the [tex]\Delta[/tex]G?
So Welec = Gfinal - Ginitial?
I'm fairly sure that's the case but the answer shows it calculated as
W = Hfinal - Hinitial
Again, correct me if I'm wrong but wouldn't that give compression/expansion work?