Copper is purified by electrolysis, as in the example shown below.

a. Name the materials used for the electrodes A and B.

b. Name the electrolyte C and substance D.

c. Why is substance D of economic importance in respect of this process?

d. Write equations for the reactions which take place at the cathode and anode during this process.

e. Draw a labelled diagram to show the cell after electrolysis has taken place.

f. Why has electrolyte C to be acidified with the dilute sulfuric acid?

g. Why does copper have to be 99.99% pure for use in electrical cables?

Transcribed Image Text:

A B D