why is the extraction of copper from pyrites more difficult than that of oxide through reduction?
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The Gibbs free energy of formation (ΔfG) of Cu2S is less than that of and. Therefore, H2 and C cannot reduce Cu2S to Cu.
On the other hand, the Gibbs free energy of formation of is greater than that of. Hence, C can reduce Cu2O to Cu.
Hence, the extraction of copper from its pyrite ore is difficult than from its oxide ore through reduction.
On the other hand, the Gibbs free energy of formation of is greater than that of. Hence, C can reduce Cu2O to Cu.
Hence, the extraction of copper from its pyrite ore is difficult than from its oxide ore through reduction.
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The method used to extract copper from its ores depends on the nature of the ore. Sulphide ores such as chalcopyrite are converted to copper by a different methodfrom silicate, carbonate or sulphate ores.
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