Question

(a) Write the steps involved in the extraction of pure metals in the middle of the
activity series from their carbonate ores.
(b) How is copper extracted from its sulphide ore ? Explain the various steps
supported by chemical equations. Draw labelled diagram for the electrolytic
refining of copper.

Answer 1

1) calcination and roasting.copper is found mainly in the form of Cu2S. Copper is obtained from Cu2S ore just by heating in air.
2Cu2S+3O2 = 2Cu2O + 2SO2
2Cu2O +Cu2S = 6Cu+ SO2.

Answer 2

Here is the steps involved in the extraction of pure metal in the middle of the activity series from their carbonate ores.

1) Convert it into metal oxide by heating it in the presence of limited oxygen.

2) Adding coke or carbon convert it into it's pure state by heating.

Hope this helps you!!!