One half cell of an electrochemical cell consists of a pure Iron electrode in a solution of Fe+2; the other is a Tin electrode immersed in Sn2+ solutions
a) if the cell were a standard one, identify the anode and cathode, write the spontaneous overall reaction and calculate the cell voltage that is generated.
b) compute the cell potential at 55 °C if the Fe+2 and Sn+2 concentrations are 0.02 M and 10-4 M, respectively.
c) determine the ratio of the concentrations of the tin and iron ions that is necessary to stop the corrosion of iron.