Question

Complete the table given below:
Nature of Anode Nature of Cathode Ions present in electrolyte Ion/s discharged at Cathode / Anode
1. Electroplating an iron rod with silver
2. Electroplating a copper sheet with nickel
3. Electrorefining of silver
4. Extraction of potassium from KCl
5. Extraction of aluminium from Al₂O₃

August 9, 2024

Answer

The completed table is given below:

	Nature of Anode	Nature of Cathode	Ions present in electrolyte	Ion/s discharged at Cathode / Anode
1. Electroplating an iron rod with silver	Silver	Iron rod	Na⁺, CN^–, Ag⁺	Cathode : Ag⁺ Anode : Nil
2. Electroplating a copper sheet with nickel	Nickle	Copper sheet	Ni²⁺, SO₄^2-	Cathode : Ni²⁺ Anode : Nil
3. Electrorefining of silver	Impure silver	Pure silver	Ag⁺, NO₃^–	Cathode : Ag⁺ Anode : Nil
4. Extraction of potassium from KCl	Graphite	Iron	K⁺, Cl^–	Cathode : K⁺ Anode : Cl^–
5. Extraction of aluminium from Al₂O₃	Graphite	Graphite	Al³⁺, O^2-	Cathode : Al³⁺ Anode : O^2-

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