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In the first paragraph of chapter 9, the text book mentions that O2 gas and H2 gas can coexist separately, but need a "spark" of energy in order to combine into water. I was wondering how this process can occur naturally in our environment. I thought of the possibility of lightning providing the energy for the two vapors to combine in the atmosphere, or some other form of energy, but I am still confused how water Cana actually help without Human Resources of providing energy.
For the most part, oxygen and hydrogen gas do not exist in large enough concentrations near enough to each other in order to react to form water. I believe the textbook is referring to being able to safely store hydrogen and oxygen together without a reaction occurring, unless some outside source of energy overcomes the activation energy. I believe this example is meant to represent that, even though the reaction is spontaneous, it cannot begin without some form of added energy.
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