Advertisements
Advertisements
Question
Explain the term:
Electro refining
Advertisements
Solution
It is the process of refining the impure metals through the use of electric current through the use of electric current or electrolysis.
APPEARS IN
RELATED QUESTIONS
Identify the substance underlined, in the following case
The electrolyte used for electroplating an article with silver.
Name the following :
The process of coating of iron with zinc
Out of Cu and Ag, which is more active?
Give three applications of electrolysis.
List out the main applications of electrolysis.
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.
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).
What ions must be present in a solution used for electroplating a particular metal?
A solution of silver nitrate is a good electrolyte but is not used for electroplating an article with silver.
Draw a labelled diagram to show how iron is electroplated with copper.
