Question

26. (a) Write chemical equations for obtaining copper from its sulphide ore by roasting.
(b) With the help of a labelled diagram explain electrolytic refining of copper.

Answer 1

Answer:

2cu2S +3o2 gives 2cu2o 2so2

2cu2o +,cu2s gives 6cu +so2

Answer 2

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During roasting, In the roaster, the copper concentrate is partially oxidised to produce "calcine" and sulfur dioxide gas.

The roasting is a method or process of metallurgy in which we heat sulfide ore to a high temperature in presence of air. It is a step of the processing of certain ores. More specifically, roasting is a metallurgical process or method which includes gas–solid reactions at right temperatures with the goal of purifying the metal components.