In a hydrogen-oxygen fuel cell, combustion of hydrogen occurs to
generate heat
create potential difference between the two electrodes
produce high purity water
remove adsorbed oxygen from electrode surface.
As we learnt in
Uses of Hydrogen -
1) For the synthesis of ammonia (NH3).
2) For the production of methanol.
3) In Oxyhydrogen tourches.
4) In a fuel cell.
- wherein
Haber's Process.
Fuel cells generate pioneer by establishing potential difference between 2 electrodes.
Option 1)
generate heat
This option is incorrect.
Option 2)
create potential difference between the two electrodes
This option is correct.
Option 3)
produce high purity water
This option is incorrect.
Option 4)
remove adsorbed oxygen from electrode surface.
This option is incorrect.