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NEETChemistryElectrochemistry

What is the purpose of a platinum electrode in some half-cells, such as the hydrogen electrode?

Options

  1. ATo act as a conductor of electricity.
  2. BTo facilitate the flow of electrons.
  3. CTo participate in the chemical reactions.
  4. DTo provide a stable surface for oxidation or reduction reactions.

Correct answer

D. To provide a stable surface for oxidation or reduction reactions.

Step-by-step solution

Sometimes metals like platinum or gold are used as inert electrodes. They do not participate in the reaction but provide their surface for oxidation or reduction reactions and for the conduction of electrons.

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