When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains ______.

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When copper ore is mixed with silica, in a reverberatory furnace copper matte is produced. The copper matte contains sulphides of copper (I) and iron (II). Explanation: The ore is heated in a reverberatory furnace after mixing with silica. In the furnace, iron oxide 'slags of' as iron silicate and copper is produced in the form of copper mattie this contains \ce{Cu2S} and \ce{FeS}. \ce{FeO + SiO2 -> FeSiO3 (slag)}

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