Question

During electrolysis of water the volume of hydrogen collected is twice that of oxygen collected. Why?

Answer 1

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We usually perform Electrolysis to split constituents of water . Water composition is 2atoms of H and 1atom of O . Therefore H is double than O . The two electrodes collect H and O separately . We know that hydrogen composition in water is double than oxygen , so we find volume of gas collected in one electrode is double than volume of gas collected in another electrade .