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Unformatted text preview: protons and electrons to form water as a byproduct. The overall reaction is essentially 2H 2 + O 2 2H 2 O + energy, and since the hydrogen and oxygen gas are kept separate, the energy is not heat, but electrical energy instead (demonstrated by the cell voltage). As hydrogen gas is depleted, the concentration of oxygen is reduced and as a result, the cell voltage decreases. But since oxygen has essentially an infinite supply of air, hydrogen gas is the limiting reagent and the reaction will stop when the supply of hydrogen gas is gone. 5. Due to the reaction 2H 2 O 2H 2 + O 2 , two molecules of Hydrogen gas are created for every one mole of oxygen gas is created, resulting in a greater volume of Hydrogen gas than oxygen gas....
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- Spring '08
- Atom, Chemical bond