Describe how a fuel cell converts the chemical energy of hydrogen or methanol directly into electricity, and write the half-equations at each electrode in acidic and alkaline electrolytes as well as the overall reaction.
Energy can also be produced by a hydrogen-oxygen fuel cell with an acidic electrolyte. (i) Deduce the half-equations for the electrode reactions in this fuel cell. (ii) Hydrogen produces a line emission spectrum with several lines in the visible region.…
A direct formic acid fuel cell generates electricity by oxidizing formic acid, , with oxygen at the two electrodes, shown below as separate half-equations. Anode: Cathode:…