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Question

When Cu2S is heated in air, the products obtained are _______ .

A
Cu2O, SO2 and Cu
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B
Cu2O and CuO
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C
Cu2O, SO3 and Cu
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D
CuO, SO2, and Cu
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Solution

The correct option is B Cu2O, SO2 and Cu
When Cu2S is heated in air, the products obtained are Cu2O, SO2, and Cu.

2Cu2S+3O2Δ2Cu2O+2SO2

2Cu2O+Cu2SΔ6Cu+SO2

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