Question

H2-O2 fuel cell was the most commonly used cell to provide electrical power in Apollo space programme amongst all the fuel cells. The cell runs continuously as long as the reactants are supplied.

Answer the following questions.(K)

(i)Write the reactions which occur at cathode.

(ii)Write the reaction which occur at anode.

(iii)Write the name of catalyst that is used in the fuel cell.

(iv)Give the values associated with using fuel cell.​

Answer 1

Answer:

see below

Explanation:

A fuel cell is a device that converts chemical potential energy (energy stored in molecular bonds) into electrical energy. A PEM (Proton Exchange Membrane) cell uses hydrogen gas (H2) and oxygen gas (O2) as fuel. The products of the reaction in the cell are water, electricity, and heat. This is a big improvement over internal combustion engines, coal burning power plants, and nuclear power plants, all of which produce harmful by-products.

Since O2 is readily available in the atmosphere, we only need to supply the fuel cell with H2 which can come from an electrolysis process (see Alkaline electrolysis or PEM electrolysis).

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