Question

what happens when hydrogen is passed over Red Hot copper oxide​

Answer 1

Metallic copper and water vapour will be formed when hydrogen is passed over heated copper(II) oxide.

CuO + H2 = Cu + H2O

Hydrogen reduces cupric oxide to free metal in this reaction.

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Answer 2

when hydrogen is passed over red hot copper oxide then

CuO + H2 = Cu + H2O

this is a single displacement reaction

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