Lead metal is added to a solution of hydrochloric acid.
What would be the theoretical cell potential, E°, for the reaction?
The reaction, if it occurs, is
Pb + 2HCl ==> PbCl2 + H2
dGrxn = (n*dGo products) - (dGo reactants)
Then dG = -nEcell*Faraday
Post your work if you get stuck. F = 96,485. n = 2 electrons.