can you please explain how is the copper metal obtained after roasting chalcocote???

Asked by indrayani | 25th Aug, 2010, 12:00: AM

Expert Answer:

Chalcocite is Cu2S

First step is roasting i,e heating the concentrated copper ore in presence of

air.

 2Cu2S + 3O2 ----2Cu2O + 2SO2

When some copper sulphide has changed into oxide form we stop the supply of air and continue heating. In absence of air the unreacted copper sulphide reduces the oxide to copper metal.

2Cu2 O + Cu2S------6Cu + SO2



Answered by  | 26th Aug, 2010, 10:10: AM

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