In the Castner-Kellner cell used for the commercial manufacture of Sodium Hydroxide (), what are the materials used for the cathode and the anode?

Question

In the Castner-Kellner cell used for the commercial manufacture of Sodium Hydroxide ($NaOH$), what are the materials used for the cathode and the anode?

Prashant Kotian · Accepted Answer

Correct answer: B. In the Castner-Kellner cell, brine (NaCl solution) is electrolyzed using a Mercury cathode and a Graphite (Carbon) anode. Sodium ions discharge at the mercury cathode to form sodium amalgam (Na-Hg), which is subsequently treated with water to yield .

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