Chemistry
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 |
Electrolysis
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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+, SO42- | 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+, O2- | Cathode : Al3+ Anode : O2- |
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