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Electrolysis of water (Decomposition of water)

Electrolysis of water (Decomposition of water)

Experiment description

This experiment demonstrates the electrolysis of water using acidified water and two electrodes connected to a battery. When electric current passes through the water, hydrogen gas is produced at the cathode and oxygen gas at the anode in a 2:1 ratio. A burning matchstick test confirms the presence of hydrogen gas.