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प्रश्न
Copy and complete the following table which refers to two practical applications of electrolysis.
| Anode | Electrolyte | Cathode | |
| Silver plating of a spoon | Solution of potassium argentocyanide | ||
| Purification of copper |
उत्तर
| Anode | Electrolyte | Cathode | |
| Silver plating of a spoon | Plate of pure clean silver | Solution of potassium argentocyanide | Cleaned article to be electroplated |
| Purification of copper | Impure copper | A solution of copper sulphate and dilute sulphuric acid | Thin strip of pure copper |
APPEARS IN
संबंधित प्रश्न
Write equations for the reactions taking place at the two electrodes (mentioning clearly the name of the electrode) during the electrolysis of Acidified copper sulphate solution with copper electrodes
What is the difference between:
Electrolytic dissociation and ionisation.
Complete the sentence by choosing correct word given in bracket.
Electrolysis is the passage of ___________________
(electricity / electrons)
Write down the changes that will be seen in each instance and explain the reason behind them.
Dilute H2SO4 was taken in an electrolytic cell and an electric current was passed through it.
State your observation for the following electrolytic reaction:
Solid copper sulphate is electrolysed between platinum electrodes.
Fill in the blank :
The ions which discharge on the positive electrode during electrolysis ____________electrons. Thus, the ions are said to be _____________.
Choose the correct answer from the option given below:
Which among the following cations will discharge with ease at cathode?
Define or explain the term: Electrolysis.
Identify the following reactions as either oxidation or reduction : Fe+3 + e- → Fe+2
Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3.
Write equations to show how X and Y form ions?
