Question

(i) Copy and complete the following table :

	Anode	Electrolyte
Purification of copper

(ii) Write the equation taking place at the anode.

Answer 1

• During the processes of electrolysis, the ionic substances are decomposes into simple substances when we pass an electric current through them. then electrolysis process is used to extract and purify the metals.
• Cupper is also purified by the method of electrolysis. When we pass the electricity through the solutions containing copper compounds, The anode (positive electrode) is made from impure copper and the cathode (negative electrode) is made from pure copper

(i) The complete table is given below:-

	Anode	Electrolyte
Purification of copper	Impure copper	Acidified ${\mathrm{CuSO}}_4$

(ii) Reaction at the anode:

$Cu\left(s\right)-2e^{-}\to {\mathrm{Cu}}^{2+}\left(aq\right)$

The anode that is made up of impure copper loses electrons and releases copper ions.