English

Copy and Complete the Following Table :

Advertisements
Advertisements

Question

Copy and complete the following table :

  Anode Electrolyte
Purification of copper    
Fill in the Blanks
Advertisements

Solution

  Anode Electrolyte
Purification of copper Impure copper Solution of copper sulphate and dilute sulphuric acid
shaalaa.com
  Is there an error in this question or solution?
Chapter 6: Electrolysis - Questions from ICSE Examinations [Page 147]

APPEARS IN

Frank Chemistry Part 2 [English] Class 10 ICSE
Chapter 6 Electrolysis
Questions from ICSE Examinations | Q 2015. 3. (a) | Page 147
Lakhmir Singh Chemistry [English] Class 10 ICSE
Chapter 6 Electrolysis
EXERCISE | Q 8. (i) | Page 133

RELATED QUESTIONS

Out of Cu and Ag, which is more active?


How would you change Cu2+ ion to Cu?


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


Give reason for the following:

The blue colour of aqueous copper sulphate fades when it is electrolysed using platinum electrodes.


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 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.


A solution of silver nitrate is a good electrolyte but is not used for electroplating an article with silver.


Which solution is preferred as electrolyte, CuSO4 or FeSO4?


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


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×