Determine: (a) the standard cell potential epsilon _cell degree, (b) the standard Gibbs free energy Delta g degree, and (c) the equilibrium constant K for the following reaction at 25 degree C: Pb(s) + 2H^+(aq) Equilibrium Pb^2+(aq) + H_2(g) The standard reduction potential for Pb^2+(aq) is -0.1262 V.