Copper is extracted in the final stage by roasting copper(i) sulfide (Cu 2 S) in a current
Question:
Copper is extracted in the final stage by roasting copper(i) sulfide (Cu2S) in a current of air. This converts the sulfide to the metal.
Cu2S(s) + O2(g) → 2Cu(s) + SO2(g)
a (i) What is the name of the chemical process by which copper(i) sulfide is converted to copper?
(ii) At what temperature does this process take place?
b. It is a very expensive business to maintain the high temperature needed to efficiently convert copper(i) sulfide to copper. How are the heating costs offset?
c. Calculate the quantity of copper(i) sulfide required to produce 1270 tonnes of copper.
(Ar: O = 16; S = 32, Cu = 63.5)
d. For use in electrical wiring, the copper must be 99.99% pure. How is the copper purified to obtain this high purity?
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a i The chemical process by which copperi sulfide is converted to copper is called roasting ii This ...View the full answer
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