Write a balanced half-cell equation for the reaction occurring at the anode. ignore phases in the reaction.

The balanced half-cell equation for the reaction occurring at the anode is H2 - --> 2H (+) + 2e (-)

Explanation:

The balanced half-cell equation taking place at the anode is explained below The product produced in the reaction in the fuel cell is water. H2 - --> 2H (+) + 2e (-) In the above reaction, the oxidation state of hydrogen switches from 0 to + 1. It is becoming oxidized by delivering two electrons at the anode. In the fuel cell, hydrogen molecules get oxidized to hydronium ions. Thus half-reaction is the oxidation reaction.