Question

during the electrolysis of water why is the volume of hydrogen collected is twice the volume of oxygen collected??

Answer 1

4H+O2->2H20
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