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How is copper metal extracted from its s...

How is copper metal extracted from its sulphide ore ?

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i.Copper can be obtained from copper(I) sulphide (`Cu_2S`) ore by just heating in air.
a. `underset"Copper (I) sulphide"(2Cu_2S_((s))) + underset"Oxygen"(3O_(2(g))) overset"Heat" to underset"Copper (I) oxide"(2Cu_2O_((s))) + underset"Sulphur dioxide"(2SO_2 uarr) `
b.`underset"Copper (I) sulphide"(Cu_2S_((s))) + underset"Copper (I) oxide" (2Cu_2O_((s))) overset"Heat"to underset"Copper" (6Cu_((s))) + underset"Sulphur dioxide"(SO_2 uarr)`
ii. The copper metal thus obtained can be further refined electrolytically.
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