$3\mathrm{.}4$ Data for the exchange$-$current density for oxygen evolution

on a lead oxide surface are provided as a function of

temperature. Develop an expression for $i_o$ as a function of

temperature. What is the activation energy? If the transfer

coefficient is a constant at $0\mathrm{.}5$ and the overpotential is $0\mathrm{.}7V,$

at what temperature will the current density for oxygen

reduction be $5A*m^{-2}?$