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Heating mixture of Cu2O and Cu2S will give (a) Cu + SO2.

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Heating mixture of Cu2O and Cu2S will give
(a) Cu + SO2
(b) Cu + SO3
(c) CuO + CuS
(d) Cu2SO3

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(a) : Cu2S + 2Cu2O → 6Cu + SO2
This is an example of autoreduction.

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Heating mixture of Cu2O and Cu2S will give
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