Chemistry
Copy and complete the following table which refers to two practical applications of electrolysis.
| Anode | Electrolyte | Cathode | |
|---|---|---|---|
| (i) Silver plating of a spoon | Solution of potassium argentocyanide | ||
| (ii) Purification of copper | |||
| (iii) Extraction of copper |
Electrolysis
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Answer
| Anode | Electrolyte | Cathode | |
|---|---|---|---|
| (i) Silver plating of a spoon | block of pure silver | Solution of potassium argentocyanide | spoon to be electroplated |
| (ii) Purification of copper | Impure block of copper | A solution of copper sulphate and dil. sulphuric acid. | Thin strip of pure copper |
| (iii) Extraction of sodium | Graphite | fused sodium chloride | Iron |
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