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प्रश्न
Name the metallic ions that should be present in the electrolyte when an article made of copper is to be electroplated with silver.
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उत्तर
Ag+ and Na+
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संबंधित प्रश्न
State one relevant observation for the following:
At the anode when aqueous copper sulphate solution is electrolysed using copper electrodes.
Choose the correct answer from the options given below:
The electrolyte used for electroplating an article with silver is
A. Silver nitrate solution
B. Silver cyanide solution
C. Sodium argentocyanide solution
D. Nickel sulfate solution
Give one word or phrase for the following:
Electrolytic deposition of a superior metal on a baser metal.
How would you change Cu2+ ion to Cu?
An electrolytic cell is set up using two platinum electrodes and an aqueous solution of copper (II) sulphate,
(a)draw a labelled diagram of the electrolytic cell,
(b)Name the ions present in the cell,
(c)Name the ions migrating towards the anode,
(d)Name the ions migrating towards the cathode,
(e)Name the ions which will not be discharged at electrodes during electrolysis,
(f)Write the reaction at the cathode,
(g)Write the reaction at the anode,
(h)Name the spectator ion in the solution.
List out the main applications of electrolysis.
The following question relate to the electroplating of an article with silver.
What should be the nature of the anode?
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).
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
Draw a labelled diagram to show how iron is electroplated with copper.
