In a hydrogen-oxygen fuel cell, gaseous hydrogen serves as the
fuel, oxygen in the air as the oxidizer, and the reaction product
is water. Consider that flat plates of Pt are used as electrodes at
25°C and fuel and air are supplied at 1 atm. [20%] (a) Write the
Nernst expression for each half-cell reaction. (b) What is the
overall cell reaction? (c) Calculate the cell voltage, Ecell, given
the above conditions. (d) Suppose that the supply of hydrogen and...