Analysis of Separation of Hydrogen and Oxygen Gases from Water through Water Electrolysis Experiments

Reinhard P Sihotang, Elsama Christina Manalu, Ryandi Simbolon
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Abstract

Electrolysis of water is the decomposition of water compounds (H2O) into oxygen (O2) and hydrogen gas (H2) using an electric current that passes through the water. At the cathode, two water molecules react by capturing two electrons, reducing them to H2 gas and a hydroxide ion (OH-). Meanwhile at the anode, two other water molecules decompose into oxygen gas (O2), release 4H+ ions and flow electrons to the cathode. The H+ and OH- ions undergo neutralization so that some water molecules are formed again. The hydrogen and oxygen gases generated from this reaction form bubbles at the electrodes and can be collected. This principle is then utilized to produce hydrogen and hydrogen peroxide (H2O2) which can be used as fuel for hydrogen vehicles.
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水电解实验对水中氢气和氧气分离的分析
水的电解是利用通过水的电流将水化合物(H2O)分解成氧气(O2)和氢气(H2)。在阴极,两个水分子通过捕获两个电子发生反应,将它们还原成氢气和氢氧根离子(OH-)。与此同时,在阳极,另外两个水分子分解成氧气(O2),释放4H+离子并将电子流到阴极。氢离子和氢氧根离子经过中和,使一些水分子重新形成。这个反应产生的氢气和氧气在电极处形成气泡,可以被收集起来。然后利用这一原理生产氢气和过氧化氢(H2O2),它们可以用作氢燃料汽车的燃料。
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