English

The Following Questions Are About Electroplating of Copper Wire with Silver. (A) What Ions Must Be Present in the Electrolyte? (B) of What Substance Must the Anode Be Made up Of?

Advertisements
Advertisements

Question

The following questions are about electroplating of copper wire with silver.
(a) What ions must be present in the electrolyte?
(b) Of what substance must the anode be made up of?
(c) What will the cathode be made up of?
(d) Write the equation for the reaction which takes place at the cathode.

One Line Answer
Advertisements

Solution

(a) The ions of the silver must be present in the electrolyte.
(b) Anode should be made of pure clean silver.
(c) The cathode is made of copper wire.
(d) The equation for the reaction which takes place at the cathode is
Ag+ + e- → Ag

shaalaa.com
  Is there an error in this question or solution?
Chapter 6: Electrolysis - Questions from ICSE Examinations [Page 142]

APPEARS IN

Frank Chemistry Part 2 [English] Class 10 ICSE
Chapter 6 Electrolysis
Questions from ICSE Examinations | Q 1995. 1. | Page 142

RELATED QUESTIONS

Identify the substance underlined, in the following case

The electrolyte used for electroplating an article with silver.


State one relevant observation for the following:

At the anode when aqueous copper sulphate solution is electrolysed using copper electrodes.


State the electrode reaction at the anode during electrolysis of:
Aqueous copper sulphate solution.


Give reason for the following:

For electroplating with silver, silver nitrate is not used as an electrolyte.


What ions must be present in a solution used for electroplating a particular metal?


Mr Ramu wants electrolyte his key chain with nickel to prevent rusting. For this electroplating
(i) Name the electrolyte
(ii) Name the cathode
(iii) Name the anode
(iv) Give the reaction at the cathode
(v) Give the reaction at the anode


Which solution is preferred as electrolyte, CuSO4 or FeSO4?


Describe what happens to the iron object and the copper rod.


Write two applications of electrolysis in which the anode diminishes in mass.


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.

    1. A diagram of the apparatus used for step 1 is shown

      1. 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?
      2. Explain why the concentration of copper ions in the electrolyte remains constant throughout step 1.
  1. Give two changes which would be needed in order to coat nickel on to the object in step 2.
  2. Write down the reaction taking place at the positive electrode during step 3.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×