Fuel Cells Answers

Electricity production in a fuel cell begins with reaction.

flow across the electrode.

Electrons then flow down the to participate in the reduction reaction.

The balances the charges in the cell to ensure electron flow within the cell.

H+ flows through the electrolyte to the cathode.

Insert numbers next to these steps to show the correct order of events for a fuel cell to work. (1 - first step, 5 – last step). At the anode, the H2 loses electrons and becomes H+.

If a stack of 1,008 alkali fuel cells in series generates 14,800 W of power, and each cell contributes equally to the power of the stack, how much power does each cell contribute? (Write the answer to one decimal place.) W

An experimental series stack of PEM cells produces 2.20 x 108 W of power. If each cell contributes 231 kW, how many cells are in the stack? (Round the answer to the nearest whole number.) cells

Identify the benefits of fuel-cell cars. Check all that apply.

Identify the drawbacks of fuel-cell cars. Check all that apply.

At the cathode, H+ ions combine with electrons and O2 to produce H2O.

Electrons (e–) flow through the wire to produce electricity.

Fuel (H2) is pumped into the cell.