Question

The inert electrode used in the electrolysis of acidified water is ______.

Options

• Nickel

• Platinum

• Copper

• Sodium

Answer 1

The inert electrode used in the electrolysis of acidified water is platinum.

Explanation:

Platinum is an inert noble metal, meaning it does not chemically react or participate in the oxidation and reduction processes during electrolysis. It acts only as a passive surface that conducts electricity and allows electrons to transfer to and from the ions in the solution. In contrast, copper and nickel are active electrodes that would dissolve or oxidise, while sodium is highly reactive and would violently react with water.