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प्रश्न
Which solution is preferred as electrolyte, CuSO4 or FeSO4?
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उत्तर
CuSO4 is preferred as an electrolyte.
संबंधित प्रश्न
Name the following :
The process of coating of iron with zinc
Name the metallic ions that should be present in the electrolyte when an article made of copper is to be electroplated with silver.
Out of Cu and Ag, which is more active?
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.
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.
What should be the nature of the anode?
The electrolyte used for electroplating an article with silver is ______.
Electroplating steel objects with silver involves a three-step process.
Step 1: A coating of copper is applied to the object.
Step 2: A coating of nickel is applied to the object.
Step 3: The coating of silver is applied to the object.
-
- A diagram of the apparatus used for step 1 is shown
- The chemical process taking place on the surface of the object is \[\ce{Cu^2+(aq) + 2e- ->Cu(s)}\]
What is the observation seen on the surface of the object? - Explain why the concentration of copper ions in the electrolyte remains constant throughout step 1.
- The chemical process taking place on the surface of the object is \[\ce{Cu^2+(aq) + 2e- ->Cu(s)}\]
- A diagram of the apparatus used for step 1 is shown
- Give two changes which would be needed in order to coat nickel on to the object in step 2.
- Write down the reaction taking place at the positive electrode during step 3.
