Which market needs fuel cells to produce electricity to power residences?
Stationary Sector
Transportation Sector
Portable Sector
Aerospace Sector
Q.2.
In a hydrogen fuel cell used to power a car, where does the oxygen come from?
The air
A catalyst
The fuel
Q.3.
In a fuel cell based on the oxidation of methane, the equation for the anode half-reaction is:CH4(g) + 2H2O(l) → CO2(g) + 8H+(aq) + 8e-The corresponding equation for the half-reaction at the cathode is
2H2O(l) + 4e- → 4H+(aq) + O2(g)
4H+(aq) + O2(g) → 2H2O(l)
2H2O(l) → 4H+(aq) + O2 (g) + 4e-
4H+(aq) + O2(g) + 4e- → 2H2O(l)
Q.4.
A fuel cell currently under development for powering small electronic devices is based on the reaction of methanol and oxygen using an acidic electrolyte. The reductant in the cell reaction and the half-reaction at the anode are