Question

When oxygen reacts with hydrogen, it has the capacity to release 29 kilojoules of energy. Inside a fuel cell, oxygen reacts with hydrogen to produce 23 kilojoules of useful energy. The rest of the energy is lost as heat. What’s the efficiency percentage of the fuel cell?

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Answer 1

By providing energy from a battery, water (H2O) can be dissociated into the ... mole of water produces mole of hydrogen gas and a half-mole of oxygen gas in their ... The utility of the Gibbs free energy is that it tells you what amount of energy in ... fuel cell process to its reverse reaction, electrolysis of water,