(a) Find the emf of the cell described by the cell diagram
Fe | Fe^2+ (1.500M) || Au^3+ (0.00400M) | Au
(b). Consider the reaction Pb(s) + 2H^+(aq) ? Pb^2+(aq) + H2(g). If the hydrogen gas pressure is maintained at 1.00 atm and the lead(II) ion concentration is 0.025 M, find the pH at which this reaction is at equilibrium.