electrodes are used in the electrolysis of acidified water.

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Solution

The correct option is A Pt
Platinum (Pt) electrodes are used in the electrolysis of $H_{2} O$ because it is an inert metal and do not take part in the reaction. It just acts as a medium of electron flow between the electrolyte and the circuit. Other commonly used inert electrodes include stainless steel, graphite, etc.

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H_{2}

O_{2}

Copy and complete the following sentences ?

With platinum electrodes hydrogen is liberated at the ........... and oxygen at the .......... during the electrolysis of acidified water.

What are the products obtained when acidified water is electrolysed using inert electrodes?

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