In Down's cell cathode is made up of:
Correct answer: C. Iron
- A. Graphite
- B. Copper
- C. Iron
- D. Inert materia
Explanation
In Down's cell, which is used for the electrolytic production of sodium metal, the cathode is made up of iron.In the Down's cell, the cathode and anode are separated by a solid barrier and are submerged in a molten mixture of sodium chloride (NaCl) and calcium chloride (CaCl₂). The cathode is typically made of iron, while the anode is made of graphite.At the cathode, sodium ions (Na⁺) are reduced to form sodium metal (Na). The iron cathode provides a surface for sodium ions to gain electrons and be reduced. This process plays a crucial role in the electrolytic production of sodium metal using the Down's cell.
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