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- #General Principles and Processes of isolation of elements
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7.3 Why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction?
Answers (1)
Gibbs free energy of formation of
is less than that of
and
so that hydrogen and carbon are unable to reduce
. But the Gibbs free energy of formation
of
is higher than that of CO. So, that carbon can able to reduce
. Therefore the extraction of copper from its pyrite ore is more difficult than its oxide ore through reduction.
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