Chemistry, asked by jibinofclass10, 11 months ago

WHERE IS CU2S AFTER ROASTING PROCESS OF CU2S. PLEASE ANSWER.IT OF CLASS 10 SCIENCE PG 51

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Answered by nazhiyafarhana

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The concentrated Copper Glance (ore used to extract copper metal) is first roasted in air when a part of copper(I) sulphide is oxidized to copper(I) oxide.

2Cu2S(s) + 3O2(g) -> 2Cu2O(s) + 2SO2(g)

When a good amount of copper(I) oxide is formed, then the supply of air for roasting stopped. In the absence of air, copper(I) oxide reacts with remaining copper(I) sulphide to form copper metal and sulphur di oxide.

2Cu2O(s) + Cu2S(s) -> 6Cu(s) + SO2(g)

Answered by Rockysingh07

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When a mixture of Cu2O and Cu2S is heated, they react together to give copper metal and sulphur dioxide gas. ... Copper glance,Cu2S, is roasted in the presence of air to get converted to Cu2O. Cu2O then reacts with non-oxidised Cu2S ore in the absence of air to form copper metal.

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