Question

The auxiliary electrode in polarography is

Answer 1

The auxiliary electrode in polarography is dropping Mercury electrode.

• In polarography, the auxiliary electrode is DME or Dropping mercury electrode. DME is used as a cathode in the polarography technique.
• The mercury pool or calomel electrode is used as the anode.
• The supporting electrolyte in polarography is Sodium chloride or potassium chloride salt which is used in an excess amount than the active electrolyte.