The space shuttle uses fuel cells( AFC's) to produce electricity . In these fuel cells,O2 reacts with water and electrons to produce OH- ioins travel to the other electrode where they react with H2 to release electrons and produce more water. Based on this information,write (deduce )the two balanced half reactions and the balanced overall raction for this type of fuel cell.

Answer 1

Nothing like handing it to you on a silver platter. You can take the full equation and write the two half cells.
http://en.wikipedia.org/wiki/Alkaline_fuel_cell