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प्रश्न
Element X is a metal with valency 2. Element Y is a non-metal with valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is diatomic gas, write the equation for the direct combination of X and Y to form a compound.
(c) Write two applications of electrolysis in which anode diminish in mass.
(d) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the _____ and the Y at the ________of the electrolytic cell. (Provide the missing words).
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उत्तर
(a) X → X2+ + 2e-
Y + 3e- → Y3-
(b) 3X + Y2 → X3Y2
(c) (i) Electroplating of metals
(ii) Electrorefining of metals
(d) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the cathode Y at the anode of the electrolytic cell.
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संबंधित प्रश्न
Copy and complete the following table:
| Anode | Electrolyte | |
| Purification of copper |
Out of Cu and Ag, which is more active?
Give reason for the following:
The blue colour of aqueous copper sulphate fades when it is electrolysed using platinum electrodes.
Give reason for the following:
For electroplating with silver, silver nitrate is not used as an electrolyte.
Explain the term:
Electro refining
The following question relate to the electroplating of an article with silver.
Name the electrode formed by the article which is to be plated.
The following question relate to the electroplating of an article with silver.
What ions must be present in the electrolyte?
The following question relate to the electroplating of an article with silver.
What should be the nature of the anode?
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
What ions must be present in a solution used for electroplating a particular metal?
