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Electrolysis of Water

Shown below i...

Question

Shown below is the electrolysis of water. Identify the electrode in which hydrogen gas will be collected.

A

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B

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C

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Solution

The correct option is C
During electrolysis of water, acidified water is taken as the electrolyte and Pt electrodes are used as anode (positively charged electrode) as well as cathode (negatively charged). When electricity is passed through water, hydrogen gas gets collected in the cathode and oxygen gas in the anode.

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